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fiv/fiv.c

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//
// fiv.c: fuck-if-I-know-how-to-name-it image browser and viewer
//
// Copyright (c) 2021 - 2022, Přemysl Eric Janouch <p@janouch.name>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
#include <glib.h>
#include <glib/gstdio.h>
#include <gtk/gtk.h>
#include <errno.h>
#include <math.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "config.h"
#include "fiv-browser.h"
#include "fiv-io.h"
#include "fiv-sidebar.h"
#include "fiv-thumbnail.h"
#include "fiv-view.h"
// --- Utilities ---------------------------------------------------------------
static void exit_fatal(const gchar *format, ...) G_GNUC_PRINTF(1, 2);
static void
exit_fatal(const gchar *format, ...)
{
va_list ap;
va_start(ap, format);
gchar *format_nl = g_strdup_printf("%s\n", format);
vfprintf(stderr, format_nl, ap);
free(format_nl);
va_end(ap);
exit(EXIT_FAILURE);
}
// --- Keyboard shortcuts ------------------------------------------------------
// Fuck XML, this can be easily represented in static structures.
// Though it would be nice if the accelerators could be customized.
struct key {
const char *accelerator;
const char *title;
};
struct key_group {
const char *title;
const struct key *keys;
};
struct key_section {
const char *title;
const char *section_name;
const struct key_group *groups;
};
static struct key help_keys_general[] = {
{"F1 <control>question", "Show this list of shortcuts"},
{"F11 f", "Toggle fullscreen view"},
{"<alt><shift>d", "Toggle dark theme variant"},
{"q <control>q", "Exit the program"},
{"Escape <control>w", "Exit the program"},
{}
};
static struct key_group help_keys_browser[] = {
{"General", help_keys_general},
{"View", (struct key[]) {
{"F9", "Toggle navigation sidebar"},
{"F5 r <control>r", "Refresh"},
{"h <control>h", "Toggle hiding unsupported files"},
{}
}},
{"Navigation", (struct key[]) {
{"<control>l", "Open location..."},
{"<control>n", "Open a new window"},
{"<alt>Left", "Go back in history"},
{"<alt>Right", "Go forward in history"},
{"<alt>Up", "Go to parent directory"},
{"<alt>Home", "Go home"},
{"Return", "Open selected item"},
{}
}},
{}
};
static struct key_group help_keys_view[] = {
{"General", help_keys_general},
{"View", (struct key[]) {
{"F8", "Toggle toolbar"},
{"F5 r <control>r", "Reload"},
{}
}},
{"Navigation", (struct key[]) {
{"<control>l", "Open location..."},
{"<control>n", "Open a new window"},
{"Left Up Page_Up", "Previous image"},
{"Right Down Page_Down", "Next image"},
{"Return <alt>Left", "Return to browser"},
{}
}},
{"Zoom", (struct key[]) {
{"<control>0", "Set zoom to 100%"},
{"1...9", "Set zoom to N:1"},
{"plus <control>plus", "Zoom in"},
{"minus <control>minus", "Zoom out"},
{"w", "Zoom to fit width if larger"},
{"h", "Zoom to fit height if larger"},
{}
}},
{"Orientation", (struct key[]) {
{"less", "Rotate anticlockwise"},
{"equal", "Mirror"},
{"greater", "Rotate clockwise"},
{}
}},
{"Configuration", (struct key[]) {
#ifdef HAVE_LCMS2
{"c", "Toggle color management"},
#endif
{"x", "Toggle scale to fit if larger"},
{"i", "Toggle smooth scaling"},
{"t", "Toggle transparency highlighting"},
#ifdef HAVE_JPEG_QS
{"e", "Toggle low-quality JPEG enhancement"},
#endif
{}
}},
{"Control", (struct key[]) {
{"bracketleft", "Previous page"},
{"bracketright", "Next page"},
{"braceleft", "Previous frame"},
{"braceright", "Next frame"},
{"space", "Toggle playback"},
{}
}},
{"Tools", (struct key[]) {
{"<control>p", "Print..."},
{"<control>s", "Save page as..."},
{"<control><shift>s", "Save frame as..."},
{"<alt>Return", "Show file information"},
{}
}},
{}
};
static struct key_section help_keys[] = {
{"Browser", "browser", help_keys_browser},
{"View", "view", help_keys_view},
{}
};
static GtkWidget *
make_key(const struct key *key)
{
return gtk_widget_new(GTK_TYPE_SHORTCUTS_SHORTCUT,
"title", key->title,
"shortcut-type", GTK_SHORTCUT_ACCELERATOR,
"accelerator", key->accelerator, NULL);
}
static GtkWidget *
make_key_group(const struct key_group *group)
{
GtkWidget *widget = gtk_widget_new(
GTK_TYPE_SHORTCUTS_GROUP, "title", group->title, NULL);
for (const struct key *p = group->keys; p->title; p++)
gtk_container_add(GTK_CONTAINER(widget), make_key(p));
return widget;
}
static GtkWidget *
make_key_section(const struct key_section *section)
{
GtkWidget *widget = gtk_widget_new(GTK_TYPE_SHORTCUTS_SECTION,
"title", section->title, "section-name", section->section_name, NULL);
for (const struct key_group *p = section->groups; p->title; p++)
gtk_container_add(GTK_CONTAINER(widget), make_key_group(p));
return widget;
}
static GtkWidget *
make_key_window(void)
{
GtkWidget *window = gtk_widget_new(GTK_TYPE_SHORTCUTS_WINDOW, NULL);
for (const struct key_section *p = help_keys; p->title; p++) {
GtkWidget *section = make_key_section(p);
gtk_widget_show_all(section);
gtk_container_add(GTK_CONTAINER(window), section);
}
return window;
}
// --- About -------------------------------------------------------------------
typedef struct {
gint cx, cy;
cairo_pattern_t *v_pattern;
} AboutContext;
static void
on_about_map(GtkWidget *widget, G_GNUC_UNUSED gpointer user_data)
{
GdkFrameClock *clock = gtk_widget_get_frame_clock(widget);
(void) g_signal_connect_swapped(
clock, "update", G_CALLBACK(gtk_widget_queue_draw), widget);
gdk_frame_clock_begin_updating(clock);
}
static void
on_about_unmap(GtkWidget *widget, G_GNUC_UNUSED gpointer user_data)
{
GdkFrameClock *clock = gtk_widget_get_frame_clock(widget);
gdk_frame_clock_end_updating(clock);
}
static gboolean
on_about_motion(
G_GNUC_UNUSED GtkWidget *widget, GdkEventMotion *event, gpointer user_data)
{
AboutContext *ctx = user_data;
ctx->cx = event->x;
ctx->cy = event->y;
return FALSE;
}
static gboolean
on_about_leave(G_GNUC_UNUSED GtkWidget *widget,
G_GNUC_UNUSED GdkEventCrossing *event, gpointer user_data)
{
AboutContext *ctx = user_data;
ctx->cx = -1;
ctx->cy = -1;
return FALSE;
}
enum { ABOUT_SIZE = 48, ABOUT_SCALE = 3, ABOUT_HEIGHT = ABOUT_SIZE * 4 / 3 };
// The mismatching resolution is incidental, and kept for interesting looks.
static cairo_pattern_t *
make_infinite_v_pattern(void)
{
cairo_surface_t *surface =
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, ABOUT_SIZE, ABOUT_SIZE);
cairo_t *cr = cairo_create(surface);
cairo_move_to(cr, 2, 7);
cairo_rel_line_to(cr, 44, 0);
cairo_rel_line_to(cr, -17, 39);
cairo_rel_line_to(cr, -10, 0);
cairo_close_path(cr);
cairo_pattern_t *gradient = cairo_pattern_create_linear(0, 7, 0, 46);
cairo_pattern_add_color_stop_rgb(gradient, 1, 1, 0x66 / 255., 0);
cairo_pattern_add_color_stop_rgb(gradient, 0, 1, 0xaa / 255., 0);
cairo_set_source(cr, gradient);
cairo_pattern_destroy(gradient);
cairo_fill(cr);
cairo_destroy(cr);
cairo_pattern_t *pattern = cairo_pattern_create_for_surface(surface);
cairo_surface_destroy(surface);
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST);
cairo_matrix_t matrix = {};
cairo_matrix_init_translate(&matrix, ABOUT_SIZE / 2, 0);
cairo_pattern_set_matrix(pattern, &matrix);
return pattern;
}
static void
draw_ligature(cairo_t *cr)
{
// Transcribed fiv.svg--it would arguably make more sense to generate
// that file and these Cairo instructions from the same source.
cairo_move_to(cr, 12.5, 20.5);
cairo_rel_line_to(cr, -4, 0);
cairo_rel_line_to(cr, 0, +5);
cairo_rel_line_to(cr, +4, 0);
cairo_rel_line_to(cr, 0, +15);
cairo_rel_line_to(cr, 9, 0);
cairo_rel_line_to(cr, 0, -15);
cairo_rel_line_to(cr, +2, 0);
cairo_rel_line_to(cr, 0, -5);
cairo_rel_line_to(cr, -2, 0);
cairo_rel_line_to(cr, 0, -8);
cairo_rel_curve_to(cr, 0, -4, 5, -4, 5, 0);
cairo_rel_curve_to(cr, 0, 6, 9, 6, 9, 0);
cairo_rel_curve_to(cr, 0, -12, -23, -12, -23, 0);
cairo_close_path(cr);
cairo_move_to(cr, 26.5, 20.5);
cairo_rel_line_to(cr, 9, 0);
cairo_rel_line_to(cr, 0, 20);
cairo_rel_line_to(cr, -9, 0);
cairo_close_path(cr);
cairo_path_t *ligature = cairo_copy_path(cr);
cairo_save(cr);
cairo_clip(cr);
// Shadow approximation, given the lack of filters in Cairo.
enum { STEPS = 5 };
for (int i = 0; i <= STEPS; i++) {
cairo_save(cr);
double o = 1. / ABOUT_SCALE + 1. / ABOUT_SCALE * i;
cairo_translate(cr, o, o);
cairo_append_path(cr, ligature);
double v = 1 - (STEPS - i) * 0.075;
cairo_set_source_rgb(cr, v, v, v);
cairo_fill(cr);
cairo_restore(cr);
}
cairo_restore(cr);
cairo_append_path(cr, ligature);
cairo_path_destroy(ligature);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_set_line_width(cr, 1);
cairo_stroke(cr);
}
static gboolean
on_about_draw(GtkWidget *widget, cairo_t *cr, gpointer user_data)
{
AboutContext *ctx = user_data;
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
GtkStyleContext *style = gtk_widget_get_style_context(widget);
gtk_render_background(style, cr, 0, 0, allocation.width, allocation.height);
cairo_translate(cr, (allocation.width - ABOUT_SIZE * ABOUT_SCALE) / 2,
ABOUT_SIZE * ABOUT_SCALE / 4);
cairo_scale(cr, ABOUT_SCALE, ABOUT_SCALE);
cairo_save(cr);
cairo_translate(cr, ABOUT_SIZE / 2, ABOUT_SIZE / 2);
if (ctx->cx >= 0 && ctx->cy >= 0) {
gint dx = ctx->cx - allocation.width / 2;
gint dy = ctx->cy - ABOUT_SIZE * ABOUT_SCALE * 3 / 4;
cairo_rotate(cr, atan2(dy, dx) - M_PI_2);
}
GdkFrameClock *clock = gtk_widget_get_frame_clock(widget);
gint64 t = gdk_frame_clock_get_frame_time(clock);
cairo_translate(cr, 0, (gint64) (t / 4e4) % ABOUT_SIZE);
cairo_set_source(cr, ctx->v_pattern);
cairo_paint(cr);
cairo_translate(cr, ABOUT_SIZE / 2, 14 /* Through trial and error. */);
cairo_scale(cr, 1, -1);
cairo_set_source(cr, ctx->v_pattern);
cairo_paint(cr);
cairo_restore(cr);
draw_ligature(cr);
return TRUE;
}
static void
show_about_dialog(GtkWidget *parent)
{
GtkWidget *dialog = gtk_widget_new(GTK_TYPE_DIALOG, "use-header-bar", TRUE,
"title", "About", "transient-for", parent, "destroy-with-parent", TRUE,
NULL);
GtkWidget *area = gtk_drawing_area_new();
gtk_style_context_add_class(gtk_widget_get_style_context(area), "view");
gtk_widget_set_size_request(
area, ABOUT_SIZE * ABOUT_SCALE * 2, ABOUT_HEIGHT * ABOUT_SCALE);
AboutContext ctx = {
.cx = -1, .cy = -1, .v_pattern = make_infinite_v_pattern()};
gtk_widget_add_events(
area, GDK_POINTER_MOTION_MASK | GDK_LEAVE_NOTIFY_MASK);
g_signal_connect(
area, "motion-notify-event", G_CALLBACK(on_about_motion), &ctx);
g_signal_connect(
area, "leave-notify-event", G_CALLBACK(on_about_leave), &ctx);
g_signal_connect(area, "draw", G_CALLBACK(on_about_draw), &ctx);
g_signal_connect(area, "map", G_CALLBACK(on_about_map), &ctx);
g_signal_connect(area, "unmap", G_CALLBACK(on_about_unmap), &ctx);
// The rest is approximately copying GTK+'s own gtkaboutdialog.ui.
GtkWidget *name = gtk_label_new(NULL);
gtk_label_set_selectable(GTK_LABEL(name), TRUE);
gtk_label_set_markup(
GTK_LABEL(name), "<b>" PROJECT_NAME "</b> " PROJECT_VERSION);
GtkWidget *website = gtk_label_new(NULL);
gtk_label_set_selectable(GTK_LABEL(website), TRUE);
const char *url = "https://git.janouch.name/p/" PROJECT_NAME;
gchar *link = g_strdup_printf("<a href='%s'>%s</a>", url, url);
gtk_label_set_markup(GTK_LABEL(website), link);
g_free(link);
GtkWidget *sw = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(
GTK_SCROLLED_WINDOW(sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(sw), GTK_SHADOW_IN);
GtkWidget *viewer = gtk_text_view_new();
gtk_text_view_set_editable(GTK_TEXT_VIEW(viewer), FALSE);
gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(viewer), FALSE);
gtk_text_view_set_left_margin(GTK_TEXT_VIEW(viewer), 8);
gtk_text_view_set_right_margin(GTK_TEXT_VIEW(viewer), 8);
gtk_container_add(GTK_CONTAINER(sw), viewer);
GBytes *license =
g_resources_lookup_data("/LICENSE", G_RESOURCE_LOOKUP_FLAGS_NONE, NULL);
g_return_if_fail(license != NULL);
gchar *escaped = g_markup_escape_text(g_bytes_get_data(license, NULL), -1);
g_bytes_unref(license);
GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(viewer));
gchar *formatted = g_strdup_printf("<small>%s</small>", escaped);
g_free(escaped);
GtkTextIter iter = {};
gtk_text_buffer_get_start_iter(buffer, &iter);
gtk_text_buffer_insert_markup(buffer, &iter, formatted, -1);
g_free(formatted);
enum { SUBBOX_MARGIN = 12 /* Roughly matches. */ };
GtkWidget *subbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);
gtk_widget_set_margin_start(subbox, SUBBOX_MARGIN);
gtk_widget_set_margin_end(subbox, SUBBOX_MARGIN);
gtk_box_pack_start(GTK_BOX(subbox), name, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(subbox), website, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(subbox), sw, TRUE, TRUE, 0);
GtkWidget *box = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
gtk_box_pack_start(GTK_BOX(box), area, FALSE, FALSE, 0);
gtk_box_pack_end(GTK_BOX(box), subbox, TRUE, TRUE, SUBBOX_MARGIN);
gtk_window_set_default_size(GTK_WINDOW(dialog), -1, 480);
gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL,
&(GdkGeometry) {.max_width = -1, .max_height = G_MAXSHORT},
GDK_HINT_MAX_SIZE);
gtk_widget_grab_focus(viewer);
gtk_widget_show_all(dialog);
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
cairo_pattern_destroy(ctx.v_pattern);
}
// --- Main --------------------------------------------------------------------
// TODO(p): See if it's possible to give separators room to shrink
// by some minor amount of pixels, margin-wise.
#define B make_toolbar_button
#define T make_toolbar_toggle
#define TOOLBAR(XX) \
XX(BROWSE, B("view-grid-symbolic", "Browse")) \
XX(FILE_PREVIOUS, B("go-previous-symbolic", "Previous file")) \
XX(FILE_NEXT, B("go-next-symbolic", "Next file")) \
XX(S1, gtk_separator_new(GTK_ORIENTATION_HORIZONTAL)) \
XX(PAGE_FIRST, B("go-top-symbolic", "First page")) \
XX(PAGE_PREVIOUS, B("go-up-symbolic", "Previous page")) \
XX(PAGE_NEXT, B("go-down-symbolic", "Next page")) \
XX(PAGE_LAST, B("go-bottom-symbolic", "Last page")) \
XX(S2, gtk_separator_new(GTK_ORIENTATION_HORIZONTAL)) \
XX(SKIP_BACK, B("media-skip-backward-symbolic", "Rewind playback")) \
XX(SEEK_BACK, B("media-seek-backward-symbolic", "Previous frame")) \
XX(PLAY_PAUSE, B("media-playback-start-symbolic", "Pause")) \
XX(SEEK_FORWARD, B("media-seek-forward-symbolic", "Next frame")) \
XX(S3, gtk_separator_new(GTK_ORIENTATION_HORIZONTAL)) \
XX(MINUS, B("zoom-out-symbolic", "Zoom out")) \
XX(SCALE, gtk_label_new("")) \
XX(PLUS, B("zoom-in-symbolic", "Zoom in")) \
XX(ONE, B("zoom-original-symbolic", "Original size")) \
XX(FIT, T("zoom-fit-best-symbolic", "Scale to fit")) \
XX(S4, gtk_separator_new(GTK_ORIENTATION_HORIZONTAL)) \
/* XX(PIN, B("view-pin-symbolic", "Keep view configuration")) */ \
/* Or perhaps "blur-symbolic", also in the extended set. */ \
XX(COLOR, T("preferences-color-symbolic", "Color management")) \
XX(SMOOTH, T("blend-tool-symbolic", "Smooth scaling")) \
XX(CHECKERBOARD, T("checkerboard-symbolic", "Highlight transparency")) \
XX(ENHANCE, T("heal-symbolic", "Enhance low-quality JPEG")) \
XX(S5, gtk_separator_new(GTK_ORIENTATION_HORIZONTAL)) \
XX(SAVE, B("document-save-as-symbolic", "Save as...")) \
XX(PRINT, B("document-print-symbolic", "Print...")) \
XX(INFO, B("info-symbolic", "Information")) \
XX(S6, gtk_separator_new(GTK_ORIENTATION_HORIZONTAL)) \
XX(LEFT, B("object-rotate-left-symbolic", "Rotate left")) \
XX(MIRROR, B("object-flip-horizontal-symbolic", "Mirror")) \
XX(RIGHT, B("object-rotate-right-symbolic", "Rotate right")) \
XX(S7, gtk_separator_new(GTK_ORIENTATION_HORIZONTAL)) \
/* We are YouTube. */ \
XX(FULLSCREEN, B("view-fullscreen-symbolic", "Fullscreen"))
enum {
#define XX(id, constructor) TOOLBAR_ ## id,
TOOLBAR(XX)
#undef XX
TOOLBAR_COUNT
};
struct {
FivIoModel *model; ///< "directory" contents
gchar *directory; ///< URI of the currently browsed directory
GList *directory_back; ///< History paths as URIs going backwards
GList *directory_forward; ///< History paths as URIs going forwards
GPtrArray *files; ///< "directory" contents as URIs
gchar *uri; ///< Current image URI, if any
gint files_index; ///< Where "uri" is within "files"
GtkWidget *window;
GtkWidget *stack;
GtkWidget *browser_paned;
GtkWidget *browser_sidebar;
GtkWidget *plus;
GtkWidget *minus;
GtkWidget *funnel;
GtkWidget *sort_field[FIV_IO_MODEL_SORT_COUNT];
GtkWidget *sort_direction[2];
GtkWidget *browser_scroller;
GtkWidget *browser;
GtkWidget *view_box;
GtkWidget *view_toolbar;
GtkWidget *toolbar[TOOLBAR_COUNT];
GtkWidget *view;
} g;
static void
show_error_dialog(GError *error)
{
GtkWidget *dialog =
gtk_message_dialog_new(GTK_WINDOW(g.window), GTK_DIALOG_MODAL,
GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s", error->message);
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
g_error_free(error);
}
static void
set_window_title(const char *uri)
{
GFile *file = g_file_new_for_uri(uri);
gchar *name = g_file_get_parse_name(file);
gtk_window_set_title(GTK_WINDOW(g.window), name);
g_free(name);
g_object_unref(file);
}
static void
switch_to_browser(void)
{
set_window_title(g.directory);
gtk_stack_set_visible_child(GTK_STACK(g.stack), g.browser_paned);
gtk_widget_grab_focus(g.browser);
}
static void
switch_to_view(void)
{
g_return_if_fail(g.uri != NULL);
set_window_title(g.uri);
gtk_stack_set_visible_child(GTK_STACK(g.stack), g.view_box);
gtk_widget_grab_focus(g.view);
}
static gchar *
parent_uri(GFile *child_file)
{
GFile *parent = g_file_get_parent(child_file);
gchar *parent_uri = g_file_get_uri(parent);
g_object_unref(parent);
return parent_uri;
}
static void
update_files_index(void)
{
g.files_index = -1;
for (guint i = 0; i < g.files->len; i++)
if (!g_strcmp0(g.uri, g_ptr_array_index(g.files, i)))
g.files_index = i;
}
static void
load_directory_without_reload(const gchar *uri)
{
gchar *uri_duplicated = g_strdup(uri);
if (g.directory_back && !strcmp(uri, g.directory_back->data)) {
// We're going back in history.
if (g.directory) {
g.directory_forward =
g_list_prepend(g.directory_forward, g.directory);
g.directory = NULL;
}
GList *link = g.directory_back;
g.directory_back = g_list_remove_link(g.directory_back, link);
g_list_free_full(link, g_free);
} else if (g.directory_forward && !strcmp(uri, g.directory_forward->data)) {
// We're going forward in history.
if (g.directory) {
g.directory_back =
g_list_prepend(g.directory_back, g.directory);
g.directory = NULL;
}
GList *link = g.directory_forward;
g.directory_forward = g_list_remove_link(g.directory_forward, link);
g_list_free_full(link, g_free);
} else if (g.directory && strcmp(uri, g.directory)) {
// We're on a new subpath.
g_list_free_full(g.directory_forward, g_free);
g.directory_forward = NULL;
g.directory_back = g_list_prepend(g.directory_back, g.directory);
g.directory = NULL;
}
g_free(g.directory);
g.directory = uri_duplicated;
}
static void
load_directory_without_switching(const gchar *uri)
{
if (uri) {
load_directory_without_reload(uri);
GtkAdjustment *vadjustment = gtk_scrolled_window_get_vadjustment(
GTK_SCROLLED_WINDOW(g.browser_scroller));
gtk_adjustment_set_value(
vadjustment, gtk_adjustment_get_lower(vadjustment));
}
GError *error = NULL;
GFile *file = g_file_new_for_uri(g.directory);
if (fiv_io_model_open(g.model, file, &error)) {
// Handled by the signal callback.
} else if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED)) {
g_error_free(error);
} else {
show_error_dialog(error);
}
g_object_unref(file);
}
static void
load_directory(const gchar *uri)
{
load_directory_without_switching(uri);
// XXX: When something outside the filtered entries is open, the index is
// kept at -1, and browsing doesn't work. How to behave here?
// Should we add it to the pointer array as an exception?
if (uri) {
switch_to_browser();
// TODO(p): Rather place it in history.
g_clear_pointer(&g.uri, g_free);
}
}
static void
on_model_files_changed(FivIoModel *model, G_GNUC_UNUSED gpointer user_data)
{
g_return_if_fail(model == g.model);
g_ptr_array_free(g.files, TRUE);
g.files = fiv_io_model_get_files(g.model);
update_files_index();
gtk_widget_set_sensitive(
g.toolbar[TOOLBAR_FILE_PREVIOUS], g.files->len > 1);
gtk_widget_set_sensitive(
g.toolbar[TOOLBAR_FILE_NEXT], g.files->len > 1);
}
static void
on_filtering_toggled(GtkToggleButton *button, G_GNUC_UNUSED gpointer user_data)
{
gboolean active = gtk_toggle_button_get_active(button);
g_object_set(g.model, "filtering", active, NULL);
}
static void
on_sort_field(G_GNUC_UNUSED GtkMenuItem *item, gpointer data)
{
g_object_set(g.model, "sort-field", (gint) (intptr_t) data, NULL);
}
static void
on_sort_direction(G_GNUC_UNUSED GtkMenuItem *item, gpointer data)
{
g_object_set(g.model, "sort-descending", (gboolean) (intptr_t) data, NULL);
}
static void
open(const gchar *uri)
{
GFile *file = g_file_new_for_uri(uri);
GError *error = NULL;
if (!fiv_view_open(FIV_VIEW(g.view), uri, &error)) {
const char *path = g_file_peek_path(file);
// TODO(p): Use g_file_info_get_display_name().
gchar *base = g_filename_display_basename(path ? path : uri);
g_object_unref(file);
g_prefix_error(&error, "%s: ", base);
show_error_dialog(error);
g_free(base);
return;
}
gtk_recent_manager_add_item(gtk_recent_manager_get_default(), uri);
g_list_free_full(g.directory_forward, g_free);
g.directory_forward = NULL;
g_free(g.uri);
g.uri = g_strdup(uri);
// So that load_directory() itself can be used for reloading.
gchar *parent = parent_uri(file);
if (!g.files->len /* hack to always load the directory after launch */ ||
!g.directory || strcmp(parent, g.directory))
load_directory_without_switching(parent);
else
update_files_index();
g_free(parent);
switch_to_view();
}
static GtkWidget *
create_open_dialog(void)
{
GtkWidget *dialog = gtk_file_chooser_dialog_new("Open file",
GTK_WINDOW(g.window), GTK_FILE_CHOOSER_ACTION_OPEN,
"_Cancel", GTK_RESPONSE_CANCEL,
"_Open", GTK_RESPONSE_ACCEPT, NULL);
gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(dialog), FALSE);
GtkFileFilter *filter = gtk_file_filter_new();
for (const char **p = fiv_io_supported_media_types; *p; p++)
gtk_file_filter_add_mime_type(filter, *p);
#ifdef HAVE_GDKPIXBUF
gtk_file_filter_add_pixbuf_formats(filter);
#endif // HAVE_GDKPIXBUF
gtk_file_filter_set_name(filter, "Supported images");
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter);
GtkFileFilter *all_files = gtk_file_filter_new();
gtk_file_filter_set_name(all_files, "All files");
gtk_file_filter_add_pattern(all_files, "*");
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), all_files);
return dialog;
}
static void
on_open(void)
{
static GtkWidget *dialog;
if (!dialog)
dialog = create_open_dialog();
// Apparently, just keeping the dialog around doesn't mean
// that it will remember its last location.
(void) gtk_file_chooser_set_current_folder_uri(
GTK_FILE_CHOOSER(dialog), g.directory);
// The default is local-only, single item.
switch (gtk_dialog_run(GTK_DIALOG(dialog))) {
gchar *uri;
case GTK_RESPONSE_ACCEPT:
uri = gtk_file_chooser_get_uri(GTK_FILE_CHOOSER(dialog));
open(uri);
g_free(uri);
break;
case GTK_RESPONSE_NONE:
dialog = NULL;
return;
}
gtk_widget_hide(dialog);
}
static void
on_previous(void)
{
if (g.files_index >= 0) {
int previous = (g.files->len + g.files_index - 1) % g.files->len;
open(g_ptr_array_index(g.files, previous));
}
}
static void
on_next(void)
{
if (g.files_index >= 0) {
int next = (g.files_index + 1) % g.files->len;
open(g_ptr_array_index(g.files, next));
}
}
static void
spawn_uri(const char *uri)
{
char *argv[] = {PROJECT_NAME, (char *) uri, NULL};
GError *error = NULL;
g_spawn_async(
NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
g_clear_error(&error);
}
static void
on_item_activated(G_GNUC_UNUSED FivBrowser *browser, GFile *location,
GtkPlacesOpenFlags flags, G_GNUC_UNUSED gpointer data)
{
gchar *uri = g_file_get_uri(location);
if (flags == GTK_PLACES_OPEN_NEW_WINDOW)
spawn_uri(uri);
else
open(uri);
g_free(uri);
}
static void open_any_file(GFile *file, gboolean force_browser);
static void
on_mounted_enclosing(GObject *source_object, GAsyncResult *res,
G_GNUC_UNUSED gpointer user_data)
{
GFile *file = G_FILE(source_object);
GError *error = NULL;
if (!g_file_mount_enclosing_volume_finish(file, res, &error))
show_error_dialog(error);
else
open_any_file(file, FALSE);
}
static void
open_any_file(GFile *file, gboolean force_browser)
{
GFileType type = g_file_query_file_type(file, G_FILE_QUERY_INFO_NONE, NULL);
if (type == G_FILE_TYPE_UNKNOWN &&
G_FILE_GET_IFACE(file)->mount_enclosing_volume) {
// TODO(p): At least provide some kind of indication.
GMountOperation *op = gtk_mount_operation_new(GTK_WINDOW(g.window));
g_file_mount_enclosing_volume(file, G_MOUNT_MOUNT_NONE, op, NULL,
on_mounted_enclosing, NULL);
g_object_unref(op);
return;
}
gchar *uri = g_file_get_uri(file);
if (type == G_FILE_TYPE_UNKNOWN) {
errno = ENOENT;
show_error_dialog(g_error_new(G_FILE_ERROR,
g_file_error_from_errno(errno), "%s: %s", uri, g_strerror(errno)));
} else if (type == G_FILE_TYPE_DIRECTORY) {
load_directory(uri);
} else if (force_browser) {
// GNOME, e.g., invokes this as a hint to focus the particular file,
// which we can't currently do yet.
gchar *parent = parent_uri(file);
load_directory(parent);
g_free(parent);
} else {
open(uri);
}
g_free(uri);
}
static void
on_open_location(G_GNUC_UNUSED GtkPlacesSidebar *sidebar, GFile *location,
GtkPlacesOpenFlags flags, G_GNUC_UNUSED gpointer user_data)
{
gchar *uri = g_file_get_uri(location);
if (flags & GTK_PLACES_OPEN_NEW_WINDOW)
spawn_uri(uri);
else
open_any_file(location, FALSE);
g_free(uri);
}
static void
on_toolbar_zoom(G_GNUC_UNUSED GtkButton *button, gpointer user_data)
{
FivThumbnailSize size = FIV_THUMBNAIL_SIZE_COUNT;
g_object_get(g.browser, "thumbnail-size", &size, NULL);
size += (gintptr) user_data;
g_return_if_fail(size >= FIV_THUMBNAIL_SIZE_MIN &&
size <= FIV_THUMBNAIL_SIZE_MAX);
g_object_set(g.browser, "thumbnail-size", size, NULL);
}
static void
on_notify_thumbnail_size(
GObject *object, GParamSpec *param_spec, G_GNUC_UNUSED gpointer user_data)
{
FivThumbnailSize size = 0;
g_object_get(object, g_param_spec_get_name(param_spec), &size, NULL);
gtk_widget_set_sensitive(g.plus, size < FIV_THUMBNAIL_SIZE_MAX);
gtk_widget_set_sensitive(g.minus, size > FIV_THUMBNAIL_SIZE_MIN);
}
static void
on_notify_filtering(
GObject *object, GParamSpec *param_spec, G_GNUC_UNUSED gpointer user_data)
{
gboolean b = FALSE;
g_object_get(object, g_param_spec_get_name(param_spec), &b, NULL);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(g.funnel), b);
}
static void
on_notify_sort_field(
GObject *object, GParamSpec *param_spec, G_GNUC_UNUSED gpointer user_data)
{
gint field = -1;
g_object_get(object, g_param_spec_get_name(param_spec), &field, NULL);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(g.sort_field[field]), TRUE);
}
static void
on_notify_sort_descending(
GObject *object, GParamSpec *param_spec, G_GNUC_UNUSED gpointer user_data)
{
gboolean b = FALSE;
g_object_get(object, g_param_spec_get_name(param_spec), &b, NULL);
gtk_check_menu_item_set_active(
GTK_CHECK_MENU_ITEM(g.sort_direction[b]), TRUE);
}
static void
toggle_fullscreen(void)
{
if (gdk_window_get_state(gtk_widget_get_window(g.window)) &
GDK_WINDOW_STATE_FULLSCREEN)
gtk_window_unfullscreen(GTK_WINDOW(g.window));
else
gtk_window_fullscreen(GTK_WINDOW(g.window));
}
static void
on_window_state_event(G_GNUC_UNUSED GtkWidget *widget,
GdkEventWindowState *event, G_GNUC_UNUSED gpointer user_data)
{
if (!(event->changed_mask & GDK_WINDOW_STATE_FULLSCREEN))
return;
const char *name = (event->new_window_state & GDK_WINDOW_STATE_FULLSCREEN)
? "view-restore-symbolic"
: "view-fullscreen-symbolic";
GtkButton *button = GTK_BUTTON(g.toolbar[TOOLBAR_FULLSCREEN]);
GtkImage *image = GTK_IMAGE(gtk_button_get_image(button));
gtk_image_set_from_icon_name(image, name, GTK_ICON_SIZE_BUTTON);
}
static void
on_help_destroyed(GtkWidget *window, GtkWidget **storage)
{
g_return_if_fail(*storage == window);
*storage = NULL;
}
static void
show_help_shortcuts(void)
{
static GtkWidget *window;
if (!window) {
window = make_key_window();
g_signal_connect(
window, "destroy", G_CALLBACK(on_help_destroyed), &window);
}
g_object_set(window, "section-name",
gtk_stack_get_visible_child(GTK_STACK(g.stack)) == g.view_box
? "view"
: "browser",
NULL);
gtk_widget_show(window);
}
// Cursor keys, e.g., simply cannot be bound through accelerators
// (and GtkWidget::keynav-failed would arguably be an awful solution).
//
// GtkBindingSets can be added directly through GtkStyleContext,
// but that would still require setting up action signals on the widget class,
// which is extremely cumbersome. GtkWidget::move-focus has no return value,
// so we can't override that and abort further handling.
//
// Therefore, bind directly to keypresses. Order can be fine-tuned with
// g_signal_connect{,after}(), or overriding the handler and either tactically
// chaining up or using gtk_window_propagate_key_event().
static gboolean
on_key_press(G_GNUC_UNUSED GtkWidget *widget, GdkEventKey *event,
G_GNUC_UNUSED gpointer data)
{
switch (event->state & gtk_accelerator_get_default_mod_mask()) {
case GDK_MOD1_MASK | GDK_SHIFT_MASK:
if (event->keyval == GDK_KEY_D) {
GtkSettings *settings = gtk_settings_get_default();
const char *property = "gtk-application-prefer-dark-theme";
gboolean set = FALSE;
g_object_get(settings, property, &set, NULL);
g_object_set(settings, property, !set, NULL);
}
break;
case GDK_CONTROL_MASK:
case GDK_CONTROL_MASK | GDK_SHIFT_MASK:
switch (event->keyval) {
case GDK_KEY_h:
gtk_button_clicked(GTK_BUTTON(g.funnel));
return TRUE;
case GDK_KEY_l:
fiv_sidebar_show_enter_location(FIV_SIDEBAR(g.browser_sidebar));
return TRUE;
case GDK_KEY_n:
spawn_uri(g.directory);
return TRUE;
case GDK_KEY_o:
on_open();
return TRUE;
case GDK_KEY_q:
case GDK_KEY_w:
gtk_widget_destroy(g.window);
return TRUE;
case GDK_KEY_question:
show_help_shortcuts();
return TRUE;
}
break;
case GDK_MOD1_MASK:
switch (event->keyval) {
case GDK_KEY_Left:
if (gtk_stack_get_visible_child(GTK_STACK(g.stack)) == g.view_box)
switch_to_browser();
else if (g.directory_back)
load_directory(g.directory_back->data);
return TRUE;
case GDK_KEY_Right:
if (g.directory_forward)
load_directory(g.directory_forward->data);
else if (g.uri)
switch_to_view();
return TRUE;
}
break;
case GDK_SHIFT_MASK:
switch (event->keyval) {
case GDK_KEY_F1:
show_about_dialog(g.window);
return TRUE;
}
break;
case 0:
switch (event->keyval) {
case GDK_KEY_Escape:
case GDK_KEY_q:
gtk_widget_destroy(g.window);
return TRUE;
case GDK_KEY_o:
on_open();
return TRUE;
case GDK_KEY_F1:
show_help_shortcuts();
return TRUE;
case GDK_KEY_F9:
gtk_widget_set_visible(g.browser_sidebar,
!gtk_widget_is_visible(g.browser_sidebar));
return TRUE;
case GDK_KEY_F11:
case GDK_KEY_f:
toggle_fullscreen();
return TRUE;
}
}
return FALSE;
}
static gboolean
on_key_press_view(G_GNUC_UNUSED GtkWidget *widget, GdkEventKey *event,
G_GNUC_UNUSED gpointer data)
{
switch (event->state & gtk_accelerator_get_default_mod_mask()) {
case 0:
switch (event->keyval) {
case GDK_KEY_F8:
gtk_widget_set_visible(g.view_toolbar,
!gtk_widget_is_visible(g.view_toolbar));
return TRUE;
case GDK_KEY_Left:
case GDK_KEY_Up:
case GDK_KEY_Page_Up:
on_previous();
return TRUE;
case GDK_KEY_Right:
case GDK_KEY_Down:
case GDK_KEY_Page_Down:
on_next();
return TRUE;
case GDK_KEY_Return:
switch_to_browser();
return TRUE;
}
}
return FALSE;
}
static gboolean
on_key_press_browser_paned(G_GNUC_UNUSED GtkWidget *widget, GdkEventKey *event,
G_GNUC_UNUSED gpointer data)
{
// TODO(p): Consider replicating more GtkFileChooserWidget bindings.
switch (event->state & gtk_accelerator_get_default_mod_mask()) {
case GDK_CONTROL_MASK:
switch (event->keyval) {
case GDK_KEY_r:
load_directory(NULL);
return TRUE;
}
break;
case GDK_MOD1_MASK:
switch (event->keyval) {
case GDK_KEY_Up: {
GFile *directory = g_file_new_for_uri(g.directory);
gchar *parent = parent_uri(directory);
g_object_unref(directory);
load_directory(parent);
g_free(parent);
return TRUE;
}
case GDK_KEY_Home: {
gchar *uri = g_filename_to_uri(g_get_home_dir(), NULL, NULL);
load_directory(uri);
g_free(uri);
return TRUE;
}
}
break;
case 0:
switch (event->keyval) {
case GDK_KEY_h:
gtk_button_clicked(GTK_BUTTON(g.funnel));
return TRUE;
case GDK_KEY_F5:
case GDK_KEY_r:
load_directory(NULL);
return TRUE;
}
}
return FALSE;
}
static gboolean
on_button_press_view(G_GNUC_UNUSED GtkWidget *widget, GdkEventButton *event)
{
if ((event->state & gtk_accelerator_get_default_mod_mask()))
return FALSE;
switch (event->button) {
case 8: // back
switch_to_browser();
return TRUE;
case GDK_BUTTON_PRIMARY:
if (event->type == GDK_2BUTTON_PRESS) {
toggle_fullscreen();
return TRUE;
}
return FALSE;
default:
return FALSE;
}
}
static gboolean
on_button_press_browser_paned(
G_GNUC_UNUSED GtkWidget *widget, GdkEventButton *event)
{
if ((event->state & gtk_accelerator_get_default_mod_mask()))
return FALSE;
switch (event->button) {
case 8: // back
if (g.directory_back)
load_directory(g.directory_back->data);
return TRUE;
case 9: // forward
if (g.directory_forward)
load_directory(g.directory_forward->data);
else if (g.uri)
switch_to_view();
return TRUE;
default:
return FALSE;
}
}
static GtkWidget *
make_toolbar_button(const gchar *symbolic, const gchar *tooltip)
{
GtkWidget *button = gtk_button_new();
gtk_button_set_image(GTK_BUTTON(button),
gtk_image_new_from_icon_name(symbolic, GTK_ICON_SIZE_BUTTON));
gtk_widget_set_tooltip_text(button, tooltip);
gtk_widget_set_focus_on_click(button, FALSE);
gtk_style_context_add_class(
gtk_widget_get_style_context(button), GTK_STYLE_CLASS_FLAT);
return button;
}
static GtkWidget *
make_toolbar_toggle(const gchar *symbolic, const gchar *tooltip)
{
GtkWidget *button = gtk_toggle_button_new();
gtk_button_set_image(GTK_BUTTON(button),
gtk_image_new_from_icon_name(symbolic, GTK_ICON_SIZE_BUTTON));
gtk_widget_set_tooltip_text(button, tooltip);
gtk_widget_set_focus_on_click(button, FALSE);
gtk_style_context_add_class(
gtk_widget_get_style_context(button), GTK_STYLE_CLASS_FLAT);
return button;
}
static void
on_view_actions_changed(void)
{
gboolean has_image = FALSE, can_animate = FALSE;
gboolean has_previous = FALSE, has_next = FALSE;
g_object_get(g.view, "has-image", &has_image, "can-animate", &can_animate,
"has-previous-page", &has_previous, "has-next-page", &has_next, NULL);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_PAGE_FIRST], has_previous);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_PAGE_PREVIOUS], has_previous);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_PAGE_NEXT], has_next);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_PAGE_LAST], has_next);
// We don't want these to flash during playback.
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_SKIP_BACK], can_animate);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_SEEK_BACK], can_animate);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_PLAY_PAUSE], can_animate);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_SEEK_FORWARD], can_animate);
// Note that none of the following should be visible with no image.
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_MINUS], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_SCALE], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_PLUS], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_ONE], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_FIT], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_COLOR], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_SMOOTH], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_CHECKERBOARD], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_ENHANCE], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_SAVE], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_PRINT], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_INFO], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_LEFT], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_MIRROR], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_RIGHT], has_image);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
on_notify_view_scale(
GObject *object, GParamSpec *param_spec, G_GNUC_UNUSED gpointer user_data)
{
double scale = 0;
g_object_get(object, g_param_spec_get_name(param_spec), &scale, NULL);
gchar *scale_str = g_strdup_printf("%.0f%%", round(scale * 100));
gtk_label_set_text(GTK_LABEL(g.toolbar[TOOLBAR_SCALE]), scale_str);
g_free(scale_str);
// FIXME: The label doesn't immediately assume its new width.
}
static void
on_notify_view_playing(
GObject *object, GParamSpec *param_spec, G_GNUC_UNUSED gpointer user_data)
{
gboolean b = FALSE;
g_object_get(object, g_param_spec_get_name(param_spec), &b, NULL);
const char *name = b
? "media-playback-pause-symbolic"
: "media-playback-start-symbolic";
GtkButton *button = GTK_BUTTON(g.toolbar[TOOLBAR_PLAY_PAUSE]);
GtkImage *image = GTK_IMAGE(gtk_button_get_image(button));
gtk_image_set_from_icon_name(image, name, GTK_ICON_SIZE_BUTTON);
}
static void
on_notify_view_boolean(
GObject *object, GParamSpec *param_spec, gpointer user_data)
{
gboolean b = FALSE;
g_object_get(object, g_param_spec_get_name(param_spec), &b, NULL);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(user_data), b);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
on_toolbar_view_toggle(GtkToggleButton *button, const char *property)
{
g_object_set(g.view, property, gtk_toggle_button_get_active(button), NULL);
}
static void
toolbar_toggler(int index, const char *property)
{
g_signal_connect(g.toolbar[index], "toggled",
G_CALLBACK(on_toolbar_view_toggle), (gpointer) property);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
on_toolbar_view_command(intptr_t command)
{
fiv_view_command(FIV_VIEW(g.view), command);
}
static void
toolbar_command(int index, FivViewCommand command)
{
g_signal_connect_swapped(g.toolbar[index], "clicked",
G_CALLBACK(on_toolbar_view_command), (void *) (intptr_t) command);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static void
toolbar_connect(int index, GCallback callback)
{
g_signal_connect_swapped(g.toolbar[index], "clicked", callback, NULL);
}
// TODO(p): The text and icons should be faded, unless the mouse cursor is
// on the toolbar. However, GtkEventBox is of no use, because either buttons
// steal our {enter,leave}-notify-events, or we steal all their input.
// Not even connecting to these signals on children works, insensitive buttons
// will not trigger anything.
// TODO(p): The toolbar should not be visible in fullscreen, or should show up
// only when the cursor reaches the top of the screen. Translucency sounds
// like a good mechanism here. Presumably, GtkOverlay could be used for this,
// but it faces the same problem as above--the input model sucks.
// TODO(p): Simply hide it in fullscreen and add a replacement context menu.
static GtkWidget *
make_view_toolbar(void)
{
#define XX(id, constructor) g.toolbar[TOOLBAR_ ## id] = constructor;
TOOLBAR(XX)
#undef XX
gtk_widget_set_margin_start(g.toolbar[TOOLBAR_SCALE], 5);
gtk_widget_set_margin_end(g.toolbar[TOOLBAR_SCALE], 5);
// So that the width doesn't jump around in the usual zoom range.
// Ideally, we'd measure the widest digit and use width(NNN%).
gtk_label_set_width_chars(GTK_LABEL(g.toolbar[TOOLBAR_SCALE]), 5);
gtk_widget_set_halign(g.toolbar[TOOLBAR_SCALE], GTK_ALIGN_CENTER);
// GtkStatusBar solves a problem we do not have here.
GtkWidget *view_toolbar = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_set_name(view_toolbar, "toolbar");
GtkBox *box = GTK_BOX(view_toolbar);
// Exploring different versions of awkward layouts.
for (int i = 0; i <= TOOLBAR_S1; i++)
gtk_box_pack_start(box, g.toolbar[i], FALSE, FALSE, 0);
for (int i = TOOLBAR_COUNT; --i >= TOOLBAR_S7; )
gtk_box_pack_end(box, g.toolbar[i], FALSE, FALSE, 0);
GtkWidget *center = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
for (int i = TOOLBAR_S1; ++i < TOOLBAR_S7; )
gtk_box_pack_start(GTK_BOX(center), g.toolbar[i], FALSE, FALSE, 0);
gtk_box_set_center_widget(box, center);
toolbar_connect(TOOLBAR_BROWSE, G_CALLBACK(switch_to_browser));
toolbar_connect(TOOLBAR_FILE_PREVIOUS, G_CALLBACK(on_previous));
toolbar_connect(TOOLBAR_FILE_NEXT, G_CALLBACK(on_next));
toolbar_command(TOOLBAR_PAGE_FIRST, FIV_VIEW_COMMAND_PAGE_FIRST);
toolbar_command(TOOLBAR_PAGE_PREVIOUS, FIV_VIEW_COMMAND_PAGE_PREVIOUS);
toolbar_command(TOOLBAR_PAGE_NEXT, FIV_VIEW_COMMAND_PAGE_NEXT);
toolbar_command(TOOLBAR_PAGE_LAST, FIV_VIEW_COMMAND_PAGE_LAST);
toolbar_command(TOOLBAR_SKIP_BACK, FIV_VIEW_COMMAND_FRAME_FIRST);
toolbar_command(TOOLBAR_SEEK_BACK, FIV_VIEW_COMMAND_FRAME_PREVIOUS);
toolbar_command(TOOLBAR_PLAY_PAUSE, FIV_VIEW_COMMAND_TOGGLE_PLAYBACK);
toolbar_command(TOOLBAR_SEEK_FORWARD, FIV_VIEW_COMMAND_FRAME_NEXT);
toolbar_command(TOOLBAR_MINUS, FIV_VIEW_COMMAND_ZOOM_OUT);
toolbar_command(TOOLBAR_PLUS, FIV_VIEW_COMMAND_ZOOM_IN);
toolbar_command(TOOLBAR_ONE, FIV_VIEW_COMMAND_ZOOM_1);
toolbar_toggler(TOOLBAR_FIT, "scale-to-fit");
toolbar_toggler(TOOLBAR_COLOR, "enable-cms");
toolbar_toggler(TOOLBAR_SMOOTH, "filter");
toolbar_toggler(TOOLBAR_CHECKERBOARD, "checkerboard");
toolbar_toggler(TOOLBAR_ENHANCE, "enhance");
toolbar_command(TOOLBAR_PRINT, FIV_VIEW_COMMAND_PRINT);
toolbar_command(TOOLBAR_SAVE, FIV_VIEW_COMMAND_SAVE_PAGE);
toolbar_command(TOOLBAR_INFO, FIV_VIEW_COMMAND_INFO);
toolbar_command(TOOLBAR_LEFT, FIV_VIEW_COMMAND_ROTATE_LEFT);
toolbar_command(TOOLBAR_MIRROR, FIV_VIEW_COMMAND_MIRROR);
toolbar_command(TOOLBAR_RIGHT, FIV_VIEW_COMMAND_ROTATE_RIGHT);
toolbar_connect(TOOLBAR_FULLSCREEN, G_CALLBACK(toggle_fullscreen));
g_signal_connect(g.view, "notify::scale",
G_CALLBACK(on_notify_view_scale), NULL);
g_signal_connect(g.view, "notify::playing",
G_CALLBACK(on_notify_view_playing), NULL);
g_signal_connect(g.view, "notify::scale-to-fit",
G_CALLBACK(on_notify_view_boolean), g.toolbar[TOOLBAR_FIT]);
g_signal_connect(g.view, "notify::enable-cms",
G_CALLBACK(on_notify_view_boolean), g.toolbar[TOOLBAR_COLOR]);
g_signal_connect(g.view, "notify::filter",
G_CALLBACK(on_notify_view_boolean), g.toolbar[TOOLBAR_SMOOTH]);
g_signal_connect(g.view, "notify::checkerboard",
G_CALLBACK(on_notify_view_boolean), g.toolbar[TOOLBAR_CHECKERBOARD]);
g_signal_connect(g.view, "notify::enhance",
G_CALLBACK(on_notify_view_boolean), g.toolbar[TOOLBAR_ENHANCE]);
g_object_notify(G_OBJECT(g.view), "scale");
g_object_notify(G_OBJECT(g.view), "playing");
g_object_notify(G_OBJECT(g.view), "scale-to-fit");
g_object_notify(G_OBJECT(g.view), "enable-cms");
g_object_notify(G_OBJECT(g.view), "filter");
g_object_notify(G_OBJECT(g.view), "checkerboard");
g_object_notify(G_OBJECT(g.view), "enhance");
#ifndef HAVE_LCMS2
gtk_widget_set_no_show_all(g.toolbar[TOOLBAR_COLOR], TRUE);
#endif
#ifndef HAVE_JPEG_QS
gtk_widget_set_no_show_all(g.toolbar[TOOLBAR_ENHANCE], TRUE);
#endif
GCallback callback = G_CALLBACK(on_view_actions_changed);
g_signal_connect(g.view, "notify::has-image", callback, NULL);
g_signal_connect(g.view, "notify::can-animate", callback, NULL);
g_signal_connect(g.view, "notify::has-previous-page", callback, NULL);
g_signal_connect(g.view, "notify::has-next-page", callback, NULL);
callback();
return view_toolbar;
}
static GtkWidget *
make_browser_sidebar(FivIoModel *model)
{
GtkWidget *sidebar = fiv_sidebar_new(model);
g_signal_connect(sidebar, "open-location",
G_CALLBACK(on_open_location), NULL);
g.plus = gtk_button_new_from_icon_name("zoom-in-symbolic",
GTK_ICON_SIZE_BUTTON);
gtk_widget_set_tooltip_text(g.plus, "Larger thumbnails");
g_signal_connect(g.plus, "clicked",
G_CALLBACK(on_toolbar_zoom), (gpointer) +1);
g.minus = gtk_button_new_from_icon_name("zoom-out-symbolic",
GTK_ICON_SIZE_BUTTON);
gtk_widget_set_tooltip_text(g.minus, "Smaller thumbnails");
g_signal_connect(g.minus, "clicked",
G_CALLBACK(on_toolbar_zoom), (gpointer) -1);
GtkWidget *zoom_group = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
gtk_style_context_add_class(
gtk_widget_get_style_context(zoom_group), GTK_STYLE_CLASS_LINKED);
gtk_box_pack_start(GTK_BOX(zoom_group), g.plus, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(zoom_group), g.minus, FALSE, FALSE, 0);
g.funnel = gtk_toggle_button_new();
gtk_container_add(GTK_CONTAINER(g.funnel),
gtk_image_new_from_icon_name("funnel-symbolic", GTK_ICON_SIZE_BUTTON));
gtk_widget_set_tooltip_text(g.funnel, "Hide unsupported files");
g_signal_connect(g.funnel, "toggled",
G_CALLBACK(on_filtering_toggled), NULL);
GtkWidget *menu = gtk_menu_new();
g.sort_field[0] = gtk_radio_menu_item_new_with_mnemonic(NULL, "By _Name");
g.sort_field[1] = gtk_radio_menu_item_new_with_mnemonic(
gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(g.sort_field[0])),
"By _Modification Time");
for (int i = FIV_IO_MODEL_SORT_MIN; i <= FIV_IO_MODEL_SORT_MAX; i++) {
g_signal_connect(g.sort_field[i], "activate",
G_CALLBACK(on_sort_field), (void *) (intptr_t) i);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), g.sort_field[i]);
}
g.sort_direction[0] =
gtk_radio_menu_item_new_with_mnemonic(NULL, "_Ascending");
g.sort_direction[1] = gtk_radio_menu_item_new_with_mnemonic(
gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(g.sort_direction[0])),
"_Descending");
g_signal_connect(g.sort_direction[0], "activate",
G_CALLBACK(on_sort_direction), (void *) 0);
g_signal_connect(g.sort_direction[1], "activate",
G_CALLBACK(on_sort_direction), (void *) 1);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), gtk_separator_menu_item_new());
gtk_menu_shell_append(GTK_MENU_SHELL(menu), g.sort_direction[0]);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), g.sort_direction[1]);
gtk_widget_show_all(menu);
GtkWidget *sort = gtk_menu_button_new();
gtk_widget_set_tooltip_text(sort, "Sort order");
gtk_button_set_image(GTK_BUTTON(sort),
gtk_image_new_from_icon_name(
"view-sort-ascending-symbolic", GTK_ICON_SIZE_BUTTON));
gtk_menu_button_set_popup(GTK_MENU_BUTTON(sort), menu);
GtkWidget *model_group = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
gtk_style_context_add_class(
gtk_widget_get_style_context(model_group), GTK_STYLE_CLASS_LINKED);
gtk_box_pack_start(GTK_BOX(model_group), g.funnel, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(model_group), sort, FALSE, FALSE, 0);
GtkBox *toolbar = fiv_sidebar_get_toolbar(FIV_SIDEBAR(sidebar));
gtk_box_pack_start(toolbar, zoom_group, FALSE, FALSE, 0);
gtk_box_pack_start(toolbar, model_group, FALSE, FALSE, 0);
gtk_widget_set_halign(GTK_WIDGET(toolbar), GTK_ALIGN_CENTER);
g_signal_connect(g.browser, "notify::thumbnail-size",
G_CALLBACK(on_notify_thumbnail_size), NULL);
g_signal_connect(model, "notify::filtering",
G_CALLBACK(on_notify_filtering), NULL);
g_signal_connect(model, "notify::sort-field",
G_CALLBACK(on_notify_sort_field), NULL);
g_signal_connect(model, "notify::sort-descending",
G_CALLBACK(on_notify_sort_descending), NULL);
on_toolbar_zoom(NULL, (gpointer) 0);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(g.funnel), TRUE);
// TODO(p): Invoke sort configuration notifications explicitly.
return sidebar;
}
// This is incredibly broken https://stackoverflow.com/a/51054396/76313
// thus resolving the problem using overlaps.
// We're trying to be universal for light and dark themes both. It's hard.
static const char stylesheet[] = "@define-color fiv-tile @content_view_bg; \
@define-color fiv-semiselected \
mix(@theme_selected_bg_color, @content_view_bg, 0.5); \
fiv-view, fiv-browser { background: @content_view_bg; } \
placessidebar.fiv .toolbar { padding: 2px 6px; } \
placessidebar.fiv box > separator { margin: 4px 0; } \
#toolbar button { padding-left: 0; padding-right: 0; } \
#toolbar > button:first-child { padding-left: 4px; } \
#toolbar > button:last-child { padding-right: 4px; } \
#toolbar separator { \
background: mix(@insensitive_fg_color, \
@insensitive_bg_color, 0.4); margin: 6px 8px; \
} \
fiv-browser { padding: 5px; } \
fiv-browser.item { \
/* For non-symbolic, color is applied to the glowing margin. */ \
color: mix(#000, @content_view_bg, 0.625); margin: 8px; \
border: 2px solid #fff; \
} \
fiv-browser.item, fiv-view.checkerboard { \
background: @theme_bg_color; background-image: \
linear-gradient(45deg, @fiv-tile 26%, transparent 26%), \
linear-gradient(-45deg, @fiv-tile 26%, transparent 26%), \
linear-gradient(45deg, transparent 74%, @fiv-tile 74%), \
linear-gradient(-45deg, transparent 74%, @fiv-tile 74%); \
background-size: 40px 40px; \
background-position: 0 0, 0 20px, 20px -20px, -20px 0px; \
} \
fiv-browser.item:selected { \
color: @theme_selected_bg_color; \
border-color: @theme_selected_bg_color; \
} \
fiv-browser.item:selected:not(:focus) { \
color: @fiv-semiselected; \
border-color: @fiv-semiselected; \
} \
fiv-browser.item:backdrop:not(:selected) { \
color: mix(#000, @content_view_bg, 0.875); \
border-color: mix(#fff, @content_view_bg, 0.5); \
} \
fiv-browser.item.symbolic, \
fiv-browser.item.symbolic:selected, \
fiv-browser.item.symbolic:backdrop { \
color: shade(@theme_bg_color, 0.875); \
border-color: transparent; \
} \
fiv-browser.item.symbolic { \
background-blend-mode: color; \
background: @theme_bg_color; background-image: none; \
} \
fiv-browser.item.symbolic:selected { \
color: @theme_selected_bg_color; background-image: linear-gradient(0, \
@theme_selected_bg_color, @theme_selected_bg_color); \
} \
fiv-browser.item.symbolic:selected:not(:focus) { \
color: @fiv-semiselected; background-image: linear-gradient(0, \
@fiv-semiselected, @fiv-semiselected); \
} \
.fiv-information label { padding: 0 4px; }";
int
main(int argc, char *argv[])
{
gboolean show_version = FALSE, show_supported_media_types = FALSE,
browse = FALSE;
gchar **path_args = NULL, *thumbnail_size = NULL;
const GOptionEntry options[] = {
{G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &path_args,
NULL, "[FILE | DIRECTORY]"},
{"list-supported-media-types", 0, G_OPTION_FLAG_IN_MAIN,
G_OPTION_ARG_NONE, &show_supported_media_types,
"Output supported media types and exit", NULL},
{"browse", 0, G_OPTION_FLAG_IN_MAIN,
G_OPTION_ARG_NONE, &browse,
"Start in filesystem browsing mode", NULL},
{"thumbnail", 0, G_OPTION_FLAG_IN_MAIN,
G_OPTION_ARG_STRING, &thumbnail_size,
"Generate thumbnails for an image, up to the given size", "SIZE"},
{"version", 'V', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
&show_version, "Output version information and exit", NULL},
{},
};
GError *error = NULL;
gboolean initialized = gtk_init_with_args(
&argc, &argv, " - Image browser and viewer", options, NULL, &error);
if (show_version) {
printf(PROJECT_NAME " " PROJECT_VERSION "\n");
return 0;
}
if (show_supported_media_types) {
for (char **types = fiv_io_all_supported_media_types(); *types; )
g_print("%s\n", *types++);
return 0;
}
if (!initialized)
exit_fatal("%s", error->message);
// NOTE: Firefox and Eye of GNOME both interpret multiple arguments
// in a special way. This is problematic, because one-element lists
// are unrepresentable.
// TODO(p): Require a command line switch, load a virtual folder.
// We may want or need to create a custom GVfs.
// TODO(p): Complain to the user if there's more than one argument.
// Best show the help message, if we can figure that out.
const gchar *path_arg = path_args ? path_args[0] : NULL;
if (thumbnail_size) {
if (!path_arg)
exit_fatal("no path given");
FivThumbnailSize size = 0;
for (; size < FIV_THUMBNAIL_SIZE_COUNT; size++)
if (!strcmp(fiv_thumbnail_sizes[size].thumbnail_spec_name,
thumbnail_size))
break;
if (size >= FIV_THUMBNAIL_SIZE_COUNT)
exit_fatal("unknown thumbnail size: %s", thumbnail_size);
GFile *target = g_file_new_for_commandline_arg(path_arg);
if (!fiv_thumbnail_produce(target, size, &error))
exit_fatal("%s", error->message);
g_object_unref(target);
return 0;
}
g.model = g_object_new(FIV_TYPE_IO_MODEL, NULL);
g_signal_connect(g.model, "files-changed",
G_CALLBACK(on_model_files_changed), NULL);
gtk_window_set_default_icon_name(PROJECT_NAME);
gtk_icon_theme_add_resource_path(
gtk_icon_theme_get_default(), "/org/gnome/design/IconLibrary/");
GtkCssProvider *provider = gtk_css_provider_new();
gtk_css_provider_load_from_data(
provider, stylesheet, sizeof stylesheet - 1, NULL);
gtk_style_context_add_provider_for_screen(gdk_screen_get_default(),
GTK_STYLE_PROVIDER(provider), GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
g_object_unref(provider);
GtkWidget *view_scroller = gtk_scrolled_window_new(NULL, NULL);
g.view = g_object_new(FIV_TYPE_VIEW, NULL);
g_signal_connect(g.view, "key-press-event",
G_CALLBACK(on_key_press_view), NULL);
g_signal_connect(g.view, "button-press-event",
G_CALLBACK(on_button_press_view), NULL);
gtk_container_add(GTK_CONTAINER(view_scroller), g.view);
// We need to hide it together with the separator.
g.view_toolbar = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
gtk_box_pack_start(GTK_BOX(g.view_toolbar),
make_view_toolbar(), FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(g.view_toolbar),
gtk_separator_new(GTK_ORIENTATION_VERTICAL), FALSE, FALSE, 0);
// Need to put the toolbar at the top, because of the horizontal scrollbar.
g.view_box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
gtk_box_pack_start(GTK_BOX(g.view_box), g.view_toolbar, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(g.view_box), view_scroller, TRUE, TRUE, 0);
g.browser_scroller = gtk_scrolled_window_new(NULL, NULL);
g.browser = fiv_browser_new(g.model);
gtk_widget_set_vexpand(g.browser, TRUE);
gtk_widget_set_hexpand(g.browser, TRUE);
g_signal_connect(g.browser, "item-activated",
G_CALLBACK(on_item_activated), NULL);
gtk_container_add(GTK_CONTAINER(g.browser_scroller), g.browser);
g.browser_sidebar = make_browser_sidebar(g.model);
g.browser_paned = gtk_paned_new(GTK_ORIENTATION_HORIZONTAL);
gtk_paned_add1(GTK_PANED(g.browser_paned), g.browser_sidebar);
gtk_paned_add2(GTK_PANED(g.browser_paned), g.browser_scroller);
g_signal_connect(g.browser_paned, "key-press-event",
G_CALLBACK(on_key_press_browser_paned), NULL);
g_signal_connect(g.browser_paned, "button-press-event",
G_CALLBACK(on_button_press_browser_paned), NULL);
g.stack = gtk_stack_new();
gtk_stack_set_transition_type(
GTK_STACK(g.stack), GTK_STACK_TRANSITION_TYPE_NONE);
gtk_container_add(GTK_CONTAINER(g.stack), g.view_box);
gtk_container_add(GTK_CONTAINER(g.stack), g.browser_paned);
gtk_widget_show_all(g.stack);
g.window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(g.window, "destroy",
G_CALLBACK(gtk_main_quit), NULL);
g_signal_connect(g.window, "key-press-event",
G_CALLBACK(on_key_press), NULL);
g_signal_connect(g.window, "window-state-event",
G_CALLBACK(on_window_state_event), NULL);
gtk_container_add(GTK_CONTAINER(g.window), g.stack);
// Try to get half of the screen vertically, in 4:3 aspect ratio.
//
// We need the GdkMonitor before the GtkWindow has a GdkWindow (i.e.,
// before it is realized). Take the smallest dimensions, out of desperation.
GdkDisplay *display = gtk_widget_get_display(g.window);
int unit = G_MAXINT;
for (int i = gdk_display_get_n_monitors(display); i--; ) {
GdkRectangle geometry = {};
gdk_monitor_get_geometry(
gdk_display_get_monitor(display, i), &geometry);
unit = MIN(unit, MIN(geometry.width, geometry.height) / 6);
}
// Ask for at least 800x600, to cover ridiculously heterogenous setups.
unit = MAX(200, unit);
gtk_window_set_default_size(GTK_WINDOW(g.window), 4 * unit, 3 * unit);
// XXX: The widget wants to read the display's profile. The realize is ugly.
gtk_widget_realize(g.view);
g.files = g_ptr_array_new_full(0, g_free);
if (path_arg) {
GFile *file = g_file_new_for_commandline_arg(path_arg);
open_any_file(file, browse);
g_object_unref(file);
}
if (!g.directory) {
GFile *file = g_file_new_for_path(".");
open_any_file(file, FALSE);
g_object_unref(file);
}
gtk_widget_show_all(g.window);
gtk_main();
return 0;
}
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