Add a lossless JPEG cropper
This is more of an MVP, as metadata probably need adjustments.
This commit is contained in:
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@ -52,6 +52,8 @@ direct installations. To test the program, help it find its custom thumbnailer:
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$ PATH=$(pwd):$PATH ./fiv
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$ PATH=$(pwd):$PATH ./fiv
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The lossless JPEG cropper is intended to be invoked from a context menu.
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Documentation
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Documentation
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-------------
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-------------
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For information concerning usage, refer to link:docs/fiv.html[the user guide],
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For information concerning usage, refer to link:docs/fiv.html[the user guide],
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421
fiv-jpegcrop.c
Normal file
421
fiv-jpegcrop.c
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@ -0,0 +1,421 @@
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//
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// fiv-jpegcrop.c: lossless JPEG cropper
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//
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// Copyright (c) 2022, 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 <gtk/gtk.h>
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#include <turbojpeg.h>
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#include "config.h"
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// --- Utilities ---------------------------------------------------------------
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static void exit_fatal(const gchar *format, ...) G_GNUC_PRINTF(1, 2);
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static void
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exit_fatal(const gchar *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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gchar *format_nl = g_strdup_printf("%s\n", format);
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vfprintf(stderr, format_nl, ap);
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free(format_nl);
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va_end(ap);
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exit(EXIT_FAILURE);
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}
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// --- Main --------------------------------------------------------------------
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struct {
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GFile *location;
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gchar *data;
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gsize len;
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int width, height, subsampling, colorspace;
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int mcu_width, mcu_height;
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cairo_surface_t *surface;
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int top, left, right, bottom;
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GtkWidget *label;
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GtkWidget *window;
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GtkWidget *scrolled;
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GtkWidget *view;
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} g;
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static void
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show_error_dialog(GError *error)
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{
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GtkWidget *dialog =
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gtk_message_dialog_new(GTK_WINDOW(g.window), GTK_DIALOG_MODAL,
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GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s", error->message);
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gtk_dialog_run(GTK_DIALOG(dialog));
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gtk_widget_destroy(dialog);
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g_error_free(error);
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}
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static gboolean
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on_draw(G_GNUC_UNUSED GtkWidget *widget, cairo_t *cr,
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G_GNUC_UNUSED gpointer user_data)
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{
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cairo_set_source_surface(cr, g.surface, 1, 1);
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cairo_paint(cr);
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cairo_rectangle(cr,
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1 + g.left - 0.5,
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1 + g.top - 0.5,
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g.right - g.left + 1,
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g.bottom - g.top + 1);
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cairo_set_source_rgb(cr, 1, 1, 1);
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cairo_set_line_width(cr, 1);
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cairo_set_operator(cr, CAIRO_OPERATOR_DIFFERENCE);
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cairo_stroke(cr);
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cairo_set_fill_rule(cr, CAIRO_FILL_RULE_EVEN_ODD);
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cairo_rectangle(cr, 1, 1, g.width, g.height);
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cairo_rectangle(
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cr, g.left, g.top, g.right - g.left + 2, g.bottom - g.top + 2);
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cairo_clip(cr);
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cairo_set_source_rgba(cr, 0, 0, 0, 0.5);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_paint(cr);
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return TRUE;
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}
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static GFile *
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choose_filename(void)
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{
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GtkWidget *dialog = gtk_file_chooser_dialog_new("Saved cropped image as",
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GTK_WINDOW(g.window), GTK_FILE_CHOOSER_ACTION_SAVE,
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"_Cancel", GTK_RESPONSE_CANCEL,
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"_Save", GTK_RESPONSE_ACCEPT, NULL);
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GtkFileChooser *chooser = GTK_FILE_CHOOSER(dialog);
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gtk_file_chooser_set_local_only(chooser, FALSE);
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gtk_file_chooser_set_do_overwrite_confirmation(chooser, TRUE);
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(void) gtk_file_chooser_set_file(chooser, g.location, NULL);
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GtkFileFilter *jpeg = gtk_file_filter_new();
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gtk_file_filter_add_mime_type(jpeg, "image/jpeg");
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gtk_file_filter_add_pattern(jpeg, "*.jpg");
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gtk_file_filter_add_pattern(jpeg, "*.jpeg");
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gtk_file_filter_add_pattern(jpeg, "*.jpe");
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gtk_file_filter_set_name(jpeg, "JPEG");
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gtk_file_chooser_add_filter(chooser, jpeg);
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GtkFileFilter *all = gtk_file_filter_new();
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gtk_file_filter_add_pattern(all, "*");
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gtk_file_filter_set_name(all, "All files");
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gtk_file_chooser_add_filter(chooser, all);
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GFile *file = NULL;
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switch (gtk_dialog_run(GTK_DIALOG(dialog))) {
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default:
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gtk_widget_destroy(dialog);
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// Fall-through.
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case GTK_RESPONSE_NONE:
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return file;
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case GTK_RESPONSE_ACCEPT:
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file = gtk_file_chooser_get_file(chooser);
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gtk_widget_destroy(dialog);
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return file;
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}
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}
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static void
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on_save_as(G_GNUC_UNUSED GtkButton *button, G_GNUC_UNUSED gpointer user_data)
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{
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tjhandle h = tjInitTransform();
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if (!h) {
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show_error_dialog(g_error_new_literal(
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G_IO_ERROR, G_IO_ERROR_FAILED, tjGetErrorStr2(h)));
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return;
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}
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// Convert up front, because the target is in memory.
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tjtransform t = {
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.r.x = g.left,
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.r.y = g.top,
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.r.w = g.right - g.left,
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.r.h = g.bottom - g.top,
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.op = TJXOP_NONE,
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.options = TJXOPT_CROP | TJXOPT_PROGRESSIVE | TJXOPT_PERFECT,
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};
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guchar *data = NULL;
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gulong len = 0;
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if (tjTransform(h, (const guchar *) g.data, g.len, 1, &data, &len, &t, 0)) {
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show_error_dialog(g_error_new_literal(
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G_IO_ERROR, G_IO_ERROR_FAILED, tjGetErrorStr2(h)));
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goto out;
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}
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GFile *file = choose_filename();
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GError *error = NULL;
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if (file &&
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!g_file_replace_contents(file, (const char *) data, len, NULL, FALSE,
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G_FILE_CREATE_NONE, NULL, NULL, &error)) {
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show_error_dialog(error);
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goto out;
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}
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g_clear_object(&file);
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tjFree(data);
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out:
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if (tjDestroy(h)) {
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show_error_dialog(g_error_new_literal(
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G_IO_ERROR, G_IO_ERROR_FAILED, tjGetErrorStr2(h)));
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}
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}
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static void
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update_label(void)
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{
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gchar *text = g_strdup_printf("(%d, %d) × (%d, %d)", g.left, g.top,
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g.right - g.left, g.bottom - g.top);
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gtk_label_set_label(GTK_LABEL(g.label), text);
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g_free(text);
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}
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static void
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update(void)
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{
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update_label();
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gtk_widget_queue_draw(g.view);
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}
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static void
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on_reset(G_GNUC_UNUSED GtkButton *button, G_GNUC_UNUSED gpointer user_data)
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{
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g.top = 0;
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g.left = 0;
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g.right = g.width;
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g.bottom = g.height;
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update();
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}
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static gboolean
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on_mouse(guint state, guint button, gdouble x, gdouble y)
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{
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if (state != 0)
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return FALSE;
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switch (button) {
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case GDK_BUTTON_PRIMARY:
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g.left = MAX(0, (int) (x - 1)) / g.mcu_width * g.mcu_width;
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g.top = MAX(0, (int) (y - 1)) / g.mcu_height * g.mcu_height;
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update();
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return TRUE;
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case GDK_BUTTON_SECONDARY:
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g.right = MIN(x, g.width); // Inclusive of pointer position.
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g.bottom = MIN(y, g.height); // Inclusive of pointer position.
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update();
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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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static gboolean
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on_press(G_GNUC_UNUSED GtkWidget *self, GdkEventButton *event,
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G_GNUC_UNUSED gpointer user_data)
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{
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return on_mouse(event->state, event->button, event->x, event->y);
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}
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static gboolean
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on_motion(G_GNUC_UNUSED GtkWidget *self, GdkEventMotion *event,
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G_GNUC_UNUSED gpointer user_data)
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{
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switch (event->state) {
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case GDK_BUTTON1_MASK:
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return on_mouse(0, GDK_BUTTON_PRIMARY, event->x, event->y);
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case GDK_BUTTON3_MASK:
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return on_mouse(0, GDK_BUTTON_SECONDARY, event->x, event->y);
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}
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return FALSE;
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}
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static gboolean
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open_jpeg(const gchar *data, gsize len, GError **error)
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{
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tjhandle h = tjInitDecompress();
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if (!h) {
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g_set_error_literal(
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error, G_IO_ERROR, G_IO_ERROR_FAILED, tjGetErrorStr2(h));
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return FALSE;
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}
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if (tjDecompressHeader3(h, (const guint8 *) data, len, &g.width, &g.height,
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&g.subsampling, &g.colorspace)) {
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g_set_error_literal(
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error, G_IO_ERROR, G_IO_ERROR_FAILED, tjGetErrorStr2(h));
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tjDestroy(h);
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return FALSE;
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}
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g.top = 0;
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g.left = 0;
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g.right = g.width;
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g.bottom = g.height;
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g.mcu_width = tjMCUWidth[g.subsampling];
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g.mcu_height = tjMCUHeight[g.subsampling];
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if (tjDestroy(h)) {
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g_set_error_literal(
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error, G_IO_ERROR, G_IO_ERROR_FAILED, tjGetErrorStr2(h));
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return FALSE;
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}
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// TODO(p): Eventually, convert to using fiv-io.c directly,
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// which will pull in most of fiv's dependencies,
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// but also enable correct color management, even for CMYK.
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// NOTE: It's possible to include this as a mode of the main binary.
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GInputStream *is = g_memory_input_stream_new_from_data(data, len, NULL);
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GdkPixbuf *pixbuf = gdk_pixbuf_new_from_stream(is, NULL, error);
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g_object_unref(is);
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if (!pixbuf)
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return FALSE;
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const char *orientation = gdk_pixbuf_get_option(pixbuf, "orientation");
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if (orientation && strlen(orientation) == 1) {
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int n = *orientation - '0';
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if (n >= 1 && n <= 8) {
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// TODO(p): Apply this to the view, somehow.
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}
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}
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g.surface = gdk_cairo_surface_create_from_pixbuf(pixbuf, 1, NULL);
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cairo_status_t surface_status = cairo_surface_status(g.surface);
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if (surface_status != CAIRO_STATUS_SUCCESS) {
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g_set_error_literal(error, G_IO_ERROR, G_IO_ERROR_FAILED,
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cairo_status_to_string(surface_status));
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g_clear_pointer(&g.surface, cairo_surface_destroy);
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g_object_unref(pixbuf);
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return FALSE;
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}
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return TRUE;
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}
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int
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main(int argc, char *argv[])
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{
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gboolean show_version = FALSE;
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gchar **path_args = NULL;
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const GOptionEntry options[] = {
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{G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &path_args,
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NULL, "[FILE | URI]"},
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{"version", 'V', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
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&show_version, "Output version information and exit", NULL},
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{},
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};
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GError *error = NULL;
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gboolean initialized = gtk_init_with_args(
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&argc, &argv, " - Lossless JPEG cropper", options, NULL, &error);
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if (show_version) {
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printf("fiv-jpegcrop " PROJECT_VERSION "\n");
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return 0;
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}
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if (!initialized)
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exit_fatal("%s", error->message);
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// TODO(p): Rather use G_OPTION_ARG_CALLBACK with G_OPTION_FLAG_FILENAME.
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// Alternatively, GOptionContext with gtk_get_option_group(TRUE).
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// Then we can show the help string here instead (in fiv as well).
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if (!path_args || !path_args[0] || path_args[1])
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exit_fatal("invalid arguments");
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gtk_window_set_default_icon_name(PROJECT_NAME);
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g.location = g_file_new_for_commandline_arg(path_args[0]);
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g.window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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g_signal_connect(g.window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
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GFileInfo *info = g_file_query_info(g.location,
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G_FILE_ATTRIBUTE_STANDARD_NAME
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"," G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME,
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G_FILE_QUERY_INFO_NONE, NULL, &error);
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if (!info ||
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!g_file_load_contents(
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||||||
|
g.location, NULL, &g.data, &g.len, NULL, &error) ||
|
||||||
|
!open_jpeg(g.data, g.len, &error)) {
|
||||||
|
show_error_dialog(error);
|
||||||
|
exit(EXIT_FAILURE);
|
||||||
|
}
|
||||||
|
|
||||||
|
GtkWidget *header = gtk_header_bar_new();
|
||||||
|
gtk_window_set_titlebar(GTK_WINDOW(g.window), header);
|
||||||
|
gtk_header_bar_set_title(
|
||||||
|
GTK_HEADER_BAR(header), g_file_info_get_display_name(info));
|
||||||
|
gtk_header_bar_set_subtitle(GTK_HEADER_BAR(header),
|
||||||
|
"Use L/R mouse buttons to adjust the crop region.");
|
||||||
|
gtk_header_bar_set_show_close_button(GTK_HEADER_BAR(header), TRUE);
|
||||||
|
|
||||||
|
g.label = gtk_label_new(NULL);
|
||||||
|
gtk_header_bar_pack_start(GTK_HEADER_BAR(header), g.label);
|
||||||
|
update_label();
|
||||||
|
|
||||||
|
GtkWidget *save = gtk_button_new_from_icon_name(
|
||||||
|
"document-save-as-symbolic", GTK_ICON_SIZE_BUTTON);
|
||||||
|
gtk_widget_set_tooltip_text(save, "Save as...");
|
||||||
|
g_signal_connect(save, "clicked", G_CALLBACK(on_save_as), NULL);
|
||||||
|
gtk_header_bar_pack_end(GTK_HEADER_BAR(header), save);
|
||||||
|
|
||||||
|
GtkWidget *reset = gtk_button_new_with_mnemonic("_Reset");
|
||||||
|
gtk_widget_set_tooltip_text(reset, "Reset the crop region");
|
||||||
|
g_signal_connect(reset, "clicked", G_CALLBACK(on_reset), NULL);
|
||||||
|
gtk_header_bar_pack_end(GTK_HEADER_BAR(header), reset);
|
||||||
|
|
||||||
|
g.view = gtk_drawing_area_new();
|
||||||
|
gtk_widget_set_size_request(g.view, g.width + 2, g.height + 2);
|
||||||
|
gtk_widget_add_events(
|
||||||
|
g.view, GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK);
|
||||||
|
g_signal_connect(g.view, "draw", G_CALLBACK(on_draw), NULL);
|
||||||
|
g_signal_connect(g.view, "button-press-event",
|
||||||
|
G_CALLBACK(on_press), NULL);
|
||||||
|
g_signal_connect(g.view, "motion-notify-event",
|
||||||
|
G_CALLBACK(on_motion), NULL);
|
||||||
|
|
||||||
|
// TODO(p): Track middle mouse button drags, adjust the adjustments.
|
||||||
|
g.scrolled = gtk_scrolled_window_new(NULL, NULL);
|
||||||
|
gtk_scrolled_window_set_overlay_scrolling(
|
||||||
|
GTK_SCROLLED_WINDOW(g.scrolled), FALSE);
|
||||||
|
gtk_scrolled_window_set_propagate_natural_width(
|
||||||
|
GTK_SCROLLED_WINDOW(g.scrolled), TRUE);
|
||||||
|
gtk_scrolled_window_set_propagate_natural_height(
|
||||||
|
GTK_SCROLLED_WINDOW(g.scrolled), TRUE);
|
||||||
|
|
||||||
|
gtk_container_add(GTK_CONTAINER(g.scrolled), g.view);
|
||||||
|
gtk_container_add(GTK_CONTAINER(g.window), g.scrolled);
|
||||||
|
gtk_window_set_default_size(GTK_WINDOW(g.window), 800, 600);
|
||||||
|
gtk_widget_show_all(g.window);
|
||||||
|
|
||||||
|
// It probably needs to be realized.
|
||||||
|
GdkWindow *window = gtk_widget_get_window(g.view);
|
||||||
|
GdkCursor *cursor =
|
||||||
|
gdk_cursor_new_from_name(gdk_window_get_display(window), "crosshair");
|
||||||
|
gdk_window_set_cursor(window, cursor);
|
||||||
|
g_object_unref(cursor);
|
||||||
|
|
||||||
|
gtk_main();
|
||||||
|
|
||||||
|
g_free(g.data);
|
||||||
|
g_object_unref(g.location);
|
||||||
|
g_object_unref(info);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
11
fiv-jpegcrop.desktop
Normal file
11
fiv-jpegcrop.desktop
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
[Desktop Entry]
|
||||||
|
Type=Application
|
||||||
|
Name=fiv JPEG Cropper
|
||||||
|
GenericName=Lossless JPEG Cropper
|
||||||
|
Icon=fiv
|
||||||
|
Exec=fiv-jpegcrop %u
|
||||||
|
NoDisplay=true
|
||||||
|
Terminal=false
|
||||||
|
StartupNotify=true
|
||||||
|
Categories=Graphics;2DGraphics;
|
||||||
|
MimeType=image/jpeg;
|
||||||
10
meson.build
10
meson.build
@ -105,13 +105,21 @@ exe = executable('fiv', 'fiv.c', 'fiv-view.c', 'fiv-io.c',
|
|||||||
'fiv-browser.c', 'fiv-sidebar.c', 'fiv-thumbnail.c', 'xdg.c', resources,
|
'fiv-browser.c', 'fiv-sidebar.c', 'fiv-thumbnail.c', 'xdg.c', resources,
|
||||||
install : true,
|
install : true,
|
||||||
dependencies : [dependencies])
|
dependencies : [dependencies])
|
||||||
|
|
||||||
if gdkpixbuf.found()
|
if gdkpixbuf.found()
|
||||||
executable('io-benchmark', 'fiv-io-benchmark.c', 'fiv-io.c', 'xdg.c',
|
executable('io-benchmark', 'fiv-io-benchmark.c', 'fiv-io.c', 'xdg.c',
|
||||||
build_by_default : false,
|
build_by_default : false,
|
||||||
dependencies : [dependencies, gdkpixbuf])
|
dependencies : [dependencies, gdkpixbuf])
|
||||||
endif
|
endif
|
||||||
|
|
||||||
|
jpegcrop = executable('fiv-jpegcrop', 'fiv-jpegcrop.c',
|
||||||
|
install : true,
|
||||||
|
dependencies : [
|
||||||
|
dependency('gtk+-3.0'),
|
||||||
|
dependency('libturbojpeg'),
|
||||||
|
])
|
||||||
|
install_data('fiv-jpegcrop.desktop',
|
||||||
|
install_dir : get_option('datadir') / 'applications')
|
||||||
|
|
||||||
# XXX: With gdk-pixbuf, this even depends on currently installed modules.
|
# XXX: With gdk-pixbuf, this even depends on currently installed modules.
|
||||||
if meson.is_cross_build()
|
if meson.is_cross_build()
|
||||||
install_data('fiv.desktop',
|
install_data('fiv.desktop',
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user