732 lines
23 KiB
C
732 lines
23 KiB
C
//
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// fastiv-browser.c: fast image viewer - filesystem browser widget
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//
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// Copyright (c) 2021, Přemysl Eric Janouch <p@janouch.name>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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#include <math.h>
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#include <pixman.h>
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#include "fastiv-browser.h"
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#include "fastiv-io.h"
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#include "fastiv-view.h"
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// --- Widget ------------------------------------------------------------------
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// _________________________________
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// │ p a d d i n g
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// │ p ╭───────────────────╮ s ╭┄┄┄┄┄
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// │ a │ glow border ┊ │ p ┊
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// │ d │ ┄ ╔═══════════╗ ┄ │ a ┊
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// │ d │ ║ thumbnail ║ │ c ┊ ...
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// │ i │ ┄ ╚═══════════╝ ┄ │ i ┊
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// │ n │ ┊ glow border │ n ┊
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// │ g ╰───────────────────╯ g ╰┄┄┄┄┄
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// │ s p a c i n g
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// │ ╭┄┄┄┄┄┄┄┄┄┄┄┄╮ ╭┄┄┄┄┄┄┄┄┄┄┄┄
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//
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// The glow is actually a glowing margin, the border is rendered in two parts.
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//
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struct _FastivBrowser {
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GtkWidget parent_instance;
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GArray *entries; ///< [Entry]
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GArray *layouted_rows; ///< [Row]
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int selected;
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GdkCursor *pointer; ///< Cached pointer cursor
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cairo_surface_t *glow; ///< CAIRO_FORMAT_A8 mask
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int item_border_x; ///< L/R .item margin + border
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int item_border_y; ///< T/B .item margin + border
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};
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typedef struct entry Entry;
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typedef struct item Item;
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typedef struct row Row;
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static const double g_row_height = 256;
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static const double g_permitted_width_multiplier = 2;
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// Could be split out to also-idiomatic row-spacing/column-spacing properties.
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// TODO(p): Make a property for this.
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static const int g_item_spacing = 1;
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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struct entry {
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char *filename; ///< Absolute path
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cairo_surface_t *thumbnail; ///< Prescaled thumbnail
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GIcon *icon; ///< If no thumbnail, use this icon
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};
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static void
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entry_free(Entry *self)
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{
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g_free(self->filename);
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if (self->thumbnail)
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cairo_surface_destroy(self->thumbnail);
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g_clear_object(&self->icon);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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struct item {
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const Entry *entry;
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int x_offset; ///< Offset within the row
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};
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struct row {
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Item *items; ///< Ends with a NULL entry
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int x_offset; ///< Start position outside borders
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int y_offset; ///< Start position inside borders
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};
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static void
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row_free(Row *self)
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{
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g_free(self->items);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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static void
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append_row(FastivBrowser *self, int *y, int x, GArray *items_array)
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{
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if (self->layouted_rows->len)
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*y += g_item_spacing;
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*y += self->item_border_y;
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g_array_append_val(self->layouted_rows, ((Row) {
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.items = g_array_steal(items_array, NULL),
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.x_offset = x,
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.y_offset = *y,
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}));
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// Not trying to pack them vertically, but this would be the place to do it.
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*y += g_row_height;
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*y += self->item_border_y;
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}
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static int
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relayout(FastivBrowser *self, int width)
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{
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GtkWidget *widget = GTK_WIDGET(self);
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GtkStyleContext *style = gtk_widget_get_style_context(widget);
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GtkBorder padding = {};
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gtk_style_context_get_padding(style, GTK_STATE_FLAG_NORMAL, &padding);
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int available_width = width - padding.left - padding.right;
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g_array_set_size(self->layouted_rows, 0);
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GArray *items = g_array_new(TRUE, TRUE, sizeof(Item));
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int x = 0, y = padding.top;
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for (guint i = 0; i < self->entries->len; i++) {
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const Entry *entry = &g_array_index(self->entries, Entry, i);
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if (!entry->thumbnail)
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continue;
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int width = cairo_image_surface_get_width(entry->thumbnail) +
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2 * self->item_border_x;
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if (!items->len) {
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// Just insert it, whether or not there's any space.
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} else if (x + g_item_spacing + width <= available_width) {
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x += g_item_spacing;
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} else {
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append_row(self, &y,
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padding.left + MAX(0, available_width - x) / 2, items);
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x = 0;
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}
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g_array_append_val(items,
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((Item) {.entry = entry, .x_offset = x + self->item_border_x}));
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x += width;
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}
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if (items->len) {
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append_row(self, &y,
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padding.left + MAX(0, available_width - x) / 2, items);
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}
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g_array_free(items, TRUE);
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return y + padding.bottom;
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}
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static void
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draw_outer_border(FastivBrowser *self, cairo_t *cr, int width, int height)
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{
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int offset_x = cairo_image_surface_get_width(self->glow);
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int offset_y = cairo_image_surface_get_height(self->glow);
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cairo_pattern_t *mask = cairo_pattern_create_for_surface(self->glow);
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cairo_matrix_t matrix;
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cairo_pattern_set_extend(mask, CAIRO_EXTEND_PAD);
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cairo_save(cr);
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cairo_translate(cr, -offset_x, -offset_y);
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cairo_rectangle(cr, 0, 0, offset_x + width, offset_y + height);
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cairo_clip(cr);
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cairo_mask(cr, mask);
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cairo_restore(cr);
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cairo_save(cr);
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cairo_translate(cr, width + offset_x, height + offset_y);
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cairo_rectangle(cr, 0, 0, -offset_x - width, -offset_y - height);
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cairo_clip(cr);
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cairo_scale(cr, -1, -1);
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cairo_mask(cr, mask);
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cairo_restore(cr);
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cairo_pattern_set_extend(mask, CAIRO_EXTEND_NONE);
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cairo_matrix_init_scale(&matrix, -1, 1);
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cairo_matrix_translate(&matrix, -width - offset_x, offset_y);
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cairo_pattern_set_matrix(mask, &matrix);
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cairo_mask(cr, mask);
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cairo_matrix_init_scale(&matrix, 1, -1);
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cairo_matrix_translate(&matrix, offset_x, -height - offset_y);
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cairo_pattern_set_matrix(mask, &matrix);
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cairo_mask(cr, mask);
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cairo_pattern_destroy(mask);
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}
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static GdkRectangle
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item_extents(const Item *item, const Row *row)
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{
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int width = cairo_image_surface_get_width(item->entry->thumbnail);
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int height = cairo_image_surface_get_height(item->entry->thumbnail);
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return (GdkRectangle) {
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.x = row->x_offset + item->x_offset,
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.y = row->y_offset + g_row_height - height,
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.width = width,
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.height = height,
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};
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}
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static const Entry *
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entry_at(FastivBrowser *self, int x, int y)
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{
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for (guint i = 0; i < self->layouted_rows->len; i++) {
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const Row *row = &g_array_index(self->layouted_rows, Row, i);
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for (Item *item = row->items; item->entry; item++) {
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GdkRectangle extents = item_extents(item, row);
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if (x >= extents.x &&
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y >= extents.y &&
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x <= extents.x + extents.width &&
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y <= extents.y + extents.height)
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return item->entry;
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}
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}
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return NULL;
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}
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static void
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draw_row(FastivBrowser *self, cairo_t *cr, const Row *row)
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{
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GtkStyleContext *style = gtk_widget_get_style_context(GTK_WIDGET(self));
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gtk_style_context_save(style);
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gtk_style_context_add_class(style, "item");
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GdkRGBA glow_color = {};
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GtkStateFlags state = gtk_style_context_get_state (style);
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gtk_style_context_get_color(style, state, &glow_color);
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GtkBorder border;
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gtk_style_context_get_border(style, state, &border);
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for (Item *item = row->items; item->entry; item++) {
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cairo_save(cr);
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GdkRectangle extents = item_extents(item, row);
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cairo_translate(cr, extents.x - border.left, extents.y - border.top);
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gtk_style_context_save(style);
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if (item->entry->icon) {
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gtk_style_context_add_class(style, "symbolic");
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} else {
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gdk_cairo_set_source_rgba(cr, &glow_color);
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draw_outer_border(self, cr,
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border.left + extents.width + border.right,
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border.top + extents.height + border.bottom);
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}
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gtk_render_background(
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style, cr, border.left, border.top, extents.width, extents.height);
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gtk_render_frame(style, cr, 0, 0,
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border.left + extents.width + border.right,
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border.top + extents.height + border.bottom);
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if (item->entry->icon) {
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GdkRGBA color = {};
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gtk_style_context_get_color(style, state, &color);
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gdk_cairo_set_source_rgba(cr, &color);
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cairo_mask_surface(
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cr, item->entry->thumbnail, border.left, border.top);
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} else {
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cairo_set_source_surface(
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cr, item->entry->thumbnail, border.left, border.top);
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cairo_paint(cr);
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}
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cairo_restore(cr);
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gtk_style_context_restore(style);
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}
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gtk_style_context_restore(style);
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}
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// --- Boilerplate -------------------------------------------------------------
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// TODO(p): For proper navigation, we need to implement GtkScrollable.
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G_DEFINE_TYPE_EXTENDED(FastivBrowser, fastiv_browser, GTK_TYPE_WIDGET, 0,
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/* G_IMPLEMENT_INTERFACE(GTK_TYPE_SCROLLABLE,
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fastiv_browser_scrollable_init) */)
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enum {
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ITEM_ACTIVATED,
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LAST_SIGNAL,
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};
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// Globals are, sadly, the canonical way of storing signal numbers.
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static guint browser_signals[LAST_SIGNAL];
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static void
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fastiv_browser_finalize(GObject *gobject)
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{
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FastivBrowser *self = FASTIV_BROWSER(gobject);
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g_array_free(self->entries, TRUE);
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g_array_free(self->layouted_rows, TRUE);
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cairo_surface_destroy(self->glow);
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g_clear_object(&self->pointer);
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G_OBJECT_CLASS(fastiv_browser_parent_class)->finalize(gobject);
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}
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static GtkSizeRequestMode
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fastiv_browser_get_request_mode(G_GNUC_UNUSED GtkWidget *widget)
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{
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return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
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}
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static void
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fastiv_browser_get_preferred_width(
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GtkWidget *widget, gint *minimum, gint *natural)
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{
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FastivBrowser *self = FASTIV_BROWSER(widget);
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GtkStyleContext *style = gtk_widget_get_style_context(widget);
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GtkBorder padding = {};
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gtk_style_context_get_padding(style, GTK_STATE_FLAG_NORMAL, &padding);
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*minimum = *natural = g_permitted_width_multiplier * g_row_height +
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padding.left + 2 * self->item_border_x + padding.right;
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}
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static void
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fastiv_browser_get_preferred_height_for_width(
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GtkWidget *widget, gint width, gint *minimum, gint *natural)
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{
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// XXX: This is rather ugly, the caller is only asking.
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*minimum = *natural = relayout(FASTIV_BROWSER(widget), width);
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}
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static void
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fastiv_browser_realize(GtkWidget *widget)
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{
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GtkAllocation allocation;
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gtk_widget_get_allocation(widget, &allocation);
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GdkWindowAttr attributes = {
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.window_type = GDK_WINDOW_CHILD,
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.x = allocation.x,
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.y = allocation.y,
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.width = allocation.width,
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.height = allocation.height,
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// Input-only would presumably also work (as in GtkPathBar, e.g.),
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// but it merely seems to involve more work.
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.wclass = GDK_INPUT_OUTPUT,
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.visual = gtk_widget_get_visual(widget),
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.event_mask = gtk_widget_get_events(widget) | GDK_KEY_PRESS_MASK |
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GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK,
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};
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// We need this window to receive input events at all.
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// TODO(p): See if input events bubble up to parents.
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GdkWindow *window = gdk_window_new(gtk_widget_get_parent_window(widget),
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&attributes, GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL);
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gtk_widget_register_window(widget, window);
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gtk_widget_set_window(widget, window);
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gtk_widget_set_realized(widget, TRUE);
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FastivBrowser *self = FASTIV_BROWSER(widget);
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g_clear_object(&self->pointer);
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self->pointer =
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gdk_cursor_new_from_name(gdk_window_get_display(window), "pointer");
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}
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static void
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fastiv_browser_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
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{
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GTK_WIDGET_CLASS(fastiv_browser_parent_class)
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->size_allocate(widget, allocation);
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relayout(FASTIV_BROWSER(widget), allocation->width);
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}
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static gboolean
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fastiv_browser_draw(GtkWidget *widget, cairo_t *cr)
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{
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FastivBrowser *self = FASTIV_BROWSER(widget);
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if (!gtk_cairo_should_draw_window(cr, gtk_widget_get_window(widget)))
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return TRUE;
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GtkAllocation allocation;
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gtk_widget_get_allocation(widget, &allocation);
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gtk_render_background(gtk_widget_get_style_context(widget), cr, 0, 0,
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allocation.width, allocation.height);
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GdkRectangle clip = {};
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gboolean have_clip = gdk_cairo_get_clip_rectangle(cr, &clip);
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for (guint i = 0; i < self->layouted_rows->len; i++) {
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const Row *row = &g_array_index(self->layouted_rows, Row, i);
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GdkRectangle extents = {
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.x = 0,
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.y = row->y_offset - self->item_border_y,
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.width = allocation.width,
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.height = g_row_height + 2 * self->item_border_y,
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};
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if (!have_clip || gdk_rectangle_intersect(&clip, &extents, NULL))
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draw_row(self, cr, row);
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}
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return TRUE;
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}
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static gboolean
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fastiv_browser_button_press_event(GtkWidget *widget, GdkEventButton *event)
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{
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GTK_WIDGET_CLASS(fastiv_browser_parent_class)
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->button_press_event(widget, event);
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FastivBrowser *self = FASTIV_BROWSER(widget);
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if (event->type != GDK_BUTTON_PRESS || event->state != 0)
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return FALSE;
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if (event->button == 1)
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gtk_widget_grab_focus(widget);
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const Entry *entry = entry_at(self, event->x, event->y);
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if (!entry)
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return FALSE;
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switch (event->button) {
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case 1:
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g_signal_emit(widget, browser_signals[ITEM_ACTIVATED], 0,
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entry->filename, GTK_PLACES_OPEN_NORMAL);
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return TRUE;
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case 2:
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g_signal_emit(widget, browser_signals[ITEM_ACTIVATED], 0,
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entry->filename, GTK_PLACES_OPEN_NEW_WINDOW);
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return TRUE;
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default:
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return FALSE;
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}
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}
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gboolean
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fastiv_browser_motion_notify_event(GtkWidget *widget, GdkEventMotion *event)
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{
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GTK_WIDGET_CLASS(fastiv_browser_parent_class)
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->motion_notify_event(widget, event);
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FastivBrowser *self = FASTIV_BROWSER(widget);
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if (event->state != 0)
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return FALSE;
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const Entry *entry = entry_at(self, event->x, event->y);
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GdkWindow *window = gtk_widget_get_window(widget);
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gdk_window_set_cursor(window, entry ? self->pointer : NULL);
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return TRUE;
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}
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static void
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fastiv_browser_style_updated(GtkWidget *widget)
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{
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GTK_WIDGET_CLASS(fastiv_browser_parent_class)->style_updated(widget);
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FastivBrowser *self = FASTIV_BROWSER(widget);
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GtkStyleContext *style = gtk_widget_get_style_context(widget);
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GtkBorder border = {}, margin = {};
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// Using a pseudo-class, because GTK+ regions are deprecated.
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gtk_style_context_save(style);
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gtk_style_context_add_class(style, "item");
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gtk_style_context_get_margin(style, GTK_STATE_FLAG_NORMAL, &margin);
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gtk_style_context_get_border(style, GTK_STATE_FLAG_NORMAL, &border);
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gtk_style_context_restore(style);
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const int glow_w = (margin.left + margin.right) / 2;
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const int glow_h = (margin.top + margin.bottom) / 2;
|
|
|
|
// Don't set different opposing sides, it will misrender, your problem.
|
|
// When the style of the class changes, this virtual method isn't invoked,
|
|
// so the update check is mildly pointless.
|
|
int item_border_x = glow_w + (border.left + border.right) / 2;
|
|
int item_border_y = glow_h + (border.top + border.bottom) / 2;
|
|
if (item_border_x != self->item_border_x ||
|
|
item_border_y != self->item_border_y) {
|
|
self->item_border_x = item_border_x;
|
|
self->item_border_y = item_border_y;
|
|
gtk_widget_queue_resize(widget);
|
|
}
|
|
|
|
if (self->glow)
|
|
cairo_surface_destroy(self->glow);
|
|
if (glow_w <= 0 || glow_h <= 0) {
|
|
self->glow = cairo_image_surface_create(CAIRO_FORMAT_A1, 0, 0);
|
|
return;
|
|
}
|
|
|
|
self->glow =
|
|
cairo_image_surface_create(CAIRO_FORMAT_A8, glow_w, glow_h);
|
|
unsigned char *data = cairo_image_surface_get_data(self->glow);
|
|
int stride = cairo_image_surface_get_stride(self->glow);
|
|
|
|
// Smooth out the curve, so that the edge of the glow isn't too jarring.
|
|
const double fade_factor = 1.5;
|
|
|
|
const int x_max = glow_w - 1;
|
|
const int y_max = glow_h - 1;
|
|
const double x_scale = 1. / MAX(1, x_max);
|
|
const double y_scale = 1. / MAX(1, y_max);
|
|
for (int y = 0; y <= y_max; y++)
|
|
for (int x = 0; x <= x_max; x++) {
|
|
const double xn = x_scale * (x_max - x);
|
|
const double yn = y_scale * (y_max - y);
|
|
double v = MIN(sqrt(xn * xn + yn * yn), 1);
|
|
data[y * stride + x] = round(pow(1 - v, fade_factor) * 255);
|
|
}
|
|
cairo_surface_mark_dirty(self->glow);
|
|
}
|
|
|
|
static void
|
|
fastiv_browser_class_init(FastivBrowserClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS(klass);
|
|
object_class->finalize = fastiv_browser_finalize;
|
|
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);
|
|
widget_class->get_request_mode = fastiv_browser_get_request_mode;
|
|
widget_class->get_preferred_width = fastiv_browser_get_preferred_width;
|
|
widget_class->get_preferred_height_for_width =
|
|
fastiv_browser_get_preferred_height_for_width;
|
|
widget_class->realize = fastiv_browser_realize;
|
|
widget_class->draw = fastiv_browser_draw;
|
|
widget_class->size_allocate = fastiv_browser_size_allocate;
|
|
widget_class->button_press_event = fastiv_browser_button_press_event;
|
|
widget_class->motion_notify_event = fastiv_browser_motion_notify_event;
|
|
widget_class->style_updated = fastiv_browser_style_updated;
|
|
|
|
browser_signals[ITEM_ACTIVATED] = g_signal_new("item-activated",
|
|
G_TYPE_FROM_CLASS(klass), 0, 0, NULL, NULL, NULL,
|
|
G_TYPE_NONE, 2, G_TYPE_STRING, GTK_TYPE_PLACES_OPEN_FLAGS);
|
|
|
|
// TODO(p): Later override "screen_changed", recreate Pango layouts there,
|
|
// if we get to have any, or otherwise reflect DPI changes.
|
|
gtk_widget_class_set_css_name(widget_class, "fastiv-browser");
|
|
}
|
|
|
|
static void
|
|
fastiv_browser_init(FastivBrowser *self)
|
|
{
|
|
gtk_widget_set_can_focus(GTK_WIDGET(self), TRUE);
|
|
|
|
self->entries = g_array_new(FALSE, TRUE, sizeof(Entry));
|
|
g_array_set_clear_func(self->entries, (GDestroyNotify) entry_free);
|
|
self->layouted_rows = g_array_new(FALSE, TRUE, sizeof(Row));
|
|
g_array_set_clear_func(self->layouted_rows, (GDestroyNotify) row_free);
|
|
|
|
self->selected = -1;
|
|
self->glow = cairo_image_surface_create(CAIRO_FORMAT_A1, 0, 0);
|
|
}
|
|
|
|
// NOTE: "It is important to note that when an image with an alpha channel is
|
|
// scaled, linear encoded, pre-multiplied component values must be used!"
|
|
static cairo_surface_t *
|
|
rescale_thumbnail(cairo_surface_t *thumbnail)
|
|
{
|
|
if (!thumbnail)
|
|
return thumbnail;
|
|
|
|
int width = cairo_image_surface_get_width(thumbnail);
|
|
int height = cairo_image_surface_get_height(thumbnail);
|
|
|
|
double scale_x = 1;
|
|
double scale_y = 1;
|
|
if (width > g_permitted_width_multiplier * height) {
|
|
scale_x = g_permitted_width_multiplier * g_row_height / width;
|
|
scale_y = round(scale_x * height) / height;
|
|
} else {
|
|
scale_y = g_row_height / height;
|
|
scale_x = round(scale_y * width) / width;
|
|
}
|
|
if (scale_x == 1 && scale_y == 1)
|
|
return thumbnail;
|
|
|
|
int projected_width = round(scale_x * width);
|
|
int projected_height = round(scale_y * height);
|
|
cairo_surface_t *scaled = cairo_image_surface_create(
|
|
CAIRO_FORMAT_ARGB32, projected_width, projected_height);
|
|
|
|
// pixman can take gamma into account when scaling, unlike Cairo.
|
|
struct pixman_f_transform xform_floating;
|
|
struct pixman_transform xform;
|
|
|
|
// PIXMAN_a8r8g8b8_sRGB can be used for gamma-correct results,
|
|
// but it's an incredibly slow transformation
|
|
pixman_format_code_t format = PIXMAN_a8r8g8b8;
|
|
|
|
pixman_image_t *src = pixman_image_create_bits(format, width, height,
|
|
(uint32_t *) cairo_image_surface_get_data(thumbnail),
|
|
cairo_image_surface_get_stride(thumbnail));
|
|
pixman_image_t *dest = pixman_image_create_bits(format,
|
|
cairo_image_surface_get_width(scaled),
|
|
cairo_image_surface_get_height(scaled),
|
|
(uint32_t *) cairo_image_surface_get_data(scaled),
|
|
cairo_image_surface_get_stride(scaled));
|
|
|
|
pixman_f_transform_init_scale(&xform_floating, scale_x, scale_y);
|
|
pixman_f_transform_invert(&xform_floating, &xform_floating);
|
|
pixman_transform_from_pixman_f_transform(&xform, &xform_floating);
|
|
pixman_image_set_transform(src, &xform);
|
|
pixman_image_set_filter(src, PIXMAN_FILTER_BILINEAR, NULL, 0);
|
|
pixman_image_set_repeat(src, PIXMAN_REPEAT_PAD);
|
|
|
|
pixman_image_composite(PIXMAN_OP_SRC, src, NULL, dest, 0, 0, 0, 0, 0, 0,
|
|
projected_width, projected_height);
|
|
pixman_image_unref(src);
|
|
pixman_image_unref(dest);
|
|
|
|
cairo_surface_destroy(thumbnail);
|
|
cairo_surface_mark_dirty(scaled);
|
|
return scaled;
|
|
}
|
|
|
|
static void
|
|
entry_add_thumbnail(gpointer data, G_GNUC_UNUSED gpointer user_data)
|
|
{
|
|
Entry *self = data;
|
|
self->thumbnail =
|
|
rescale_thumbnail(fastiv_io_lookup_thumbnail(self->filename));
|
|
if (self->thumbnail)
|
|
return;
|
|
|
|
// Fall back to symbolic icons, though there's only so much we can do
|
|
// in parallel--GTK+ isn't thread-safe.
|
|
GFile *file = g_file_new_for_path(self->filename);
|
|
GFileInfo *info = g_file_query_info(file,
|
|
G_FILE_ATTRIBUTE_STANDARD_NAME
|
|
"," G_FILE_ATTRIBUTE_STANDARD_SYMBOLIC_ICON,
|
|
G_FILE_QUERY_INFO_NONE, NULL, NULL);
|
|
g_object_unref(file);
|
|
if (info) {
|
|
GIcon *icon = g_file_info_get_symbolic_icon(info);
|
|
if (icon)
|
|
self->icon = g_object_ref(icon);
|
|
g_object_unref(info);
|
|
}
|
|
}
|
|
|
|
void
|
|
fastiv_browser_load(
|
|
FastivBrowser *self, FastivBrowserFilterCallback cb, const char *path)
|
|
{
|
|
g_array_set_size(self->entries, 0);
|
|
g_array_set_size(self->layouted_rows, 0);
|
|
|
|
GFile *file = g_file_new_for_path(path);
|
|
GFileEnumerator *enumerator = g_file_enumerate_children(file,
|
|
G_FILE_ATTRIBUTE_STANDARD_NAME "," G_FILE_ATTRIBUTE_STANDARD_TYPE,
|
|
G_FILE_QUERY_INFO_NONE, NULL, NULL);
|
|
g_object_unref(file);
|
|
if (!enumerator)
|
|
return;
|
|
|
|
while (TRUE) {
|
|
GFileInfo *info = NULL;
|
|
GFile *child = NULL;
|
|
if (!g_file_enumerator_iterate(enumerator, &info, &child, NULL, NULL) ||
|
|
!info)
|
|
break;
|
|
if (g_file_info_get_file_type(info) == G_FILE_TYPE_DIRECTORY)
|
|
continue;
|
|
|
|
// TODO(p): Support being passed a sort function.
|
|
if (cb && !cb(g_file_info_get_name(info)))
|
|
continue;
|
|
|
|
g_array_append_val(self->entries,
|
|
((Entry) {.thumbnail = NULL, .filename = g_file_get_path(child)}));
|
|
}
|
|
g_object_unref(enumerator);
|
|
|
|
GThreadPool *pool = g_thread_pool_new(
|
|
entry_add_thumbnail, NULL, g_get_num_processors(), FALSE, NULL);
|
|
for (guint i = 0; i < self->entries->len; i++)
|
|
g_thread_pool_push(pool, &g_array_index(self->entries, Entry, i), NULL);
|
|
g_thread_pool_free(pool, FALSE, TRUE);
|
|
|
|
for (guint i = 0; i < self->entries->len; i++) {
|
|
Entry *entry = &g_array_index(self->entries, Entry, i);
|
|
if (!entry->icon)
|
|
continue;
|
|
|
|
// Fucker will still give us non-symbolic icons, no more playing nice.
|
|
// TODO(p): Investigate a bit closer. We may want to abandon the idea
|
|
// of using GLib to look up icons for us, derive a list from a guessed
|
|
// MIME type, with "-symbolic" prefixes and fallbacks,
|
|
// and use gtk_icon_theme_choose_icon() instead.
|
|
// TODO(p): Make sure we have /some/ icon for every entry.
|
|
// TODO(p): GtkSettings -> notify::gtk-icon-theme-name?
|
|
// TODO(p): We might want to populate these on an as-needed basis.
|
|
GtkIconInfo *icon_info =
|
|
gtk_icon_theme_lookup_by_gicon(gtk_icon_theme_get_default(),
|
|
entry->icon, g_row_height / 2, GTK_ICON_LOOKUP_FORCE_SYMBOLIC);
|
|
if (!icon_info)
|
|
continue;
|
|
|
|
// Bílá, bílá, bílá, bílá... komu by se nelíbí-lá...
|
|
// We do not want any highlights, nor do we want to remember the style.
|
|
const GdkRGBA white = {1, 1, 1, 1};
|
|
GdkPixbuf *pixbuf = gtk_icon_info_load_symbolic(
|
|
icon_info, &white, &white, &white, &white, NULL, NULL);
|
|
if (pixbuf) {
|
|
int outer_size = g_row_height;
|
|
entry->thumbnail = cairo_image_surface_create(
|
|
CAIRO_FORMAT_A8, outer_size, outer_size);
|
|
|
|
// "Note that the resulting pixbuf may not be exactly this size;"
|
|
// though GTK_ICON_LOOKUP_FORCE_SIZE is also an option.
|
|
int x = (outer_size - gdk_pixbuf_get_width(pixbuf)) / 2;
|
|
int y = (outer_size - gdk_pixbuf_get_height(pixbuf)) / 2;
|
|
|
|
cairo_t *cr = cairo_create(entry->thumbnail);
|
|
gdk_cairo_set_source_pixbuf(cr, pixbuf, x, y);
|
|
cairo_paint(cr);
|
|
cairo_destroy(cr);
|
|
|
|
g_object_unref(pixbuf);
|
|
}
|
|
g_object_unref(icon_info);
|
|
}
|
|
|
|
// TODO(p): Sort and filter the entries.
|
|
gtk_widget_queue_resize(GTK_WIDGET(self));
|
|
}
|