DeforaOS/Browser
DeforaOS/Browser
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Allow image preview to be zoomed in and out

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This commit is contained in:
Pierre Pronchery 2013-10-05 02:55:04 +02:00
parent 7c82b3bfbf
commit c9edaafb39
1 changed files with 78 additions and 4 deletions
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82
src/plugins/preview.c
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@ -36,6 +36,7 @@ typedef struct _BrowserPlugin
char * path;
guint source;
unsigned int size;
/* widgets */
GtkWidget * widget;
@ -43,6 +44,9 @@ typedef struct _BrowserPlugin
GtkWidget * toolbar;
GtkToolItem * open;
GtkToolItem * edit;
GtkToolItem * zoom_fit;
GtkToolItem * zoom_out;
GtkToolItem * zoom_in;
GtkWidget * view_image;
GtkWidget * view_text;
GtkTextBuffer * view_text_buffer;
@ -61,6 +65,9 @@ static void _preview_on_edit(gpointer data);
static gboolean _preview_on_idle_image(gpointer data);
static gboolean _preview_on_idle_text(gpointer data);
static void _preview_on_open(gpointer data);
static void _preview_on_zoom_fit(gpointer data);
static void _preview_on_zoom_in(gpointer data);
static void _preview_on_zoom_out(gpointer data);
/* public */
@ -92,6 +99,7 @@ static Preview * _preview_init(BrowserPluginHelper * helper)
preview->helper = helper;
preview->path = NULL;
preview->source = 0;
preview->size = 96;
/* widgets */
vbox = gtk_vbox_new(FALSE, 4);
preview->widget = vbox;
@ -107,6 +115,21 @@ static Preview * _preview_init(BrowserPluginHelper * helper)
g_signal_connect_swapped(preview->edit, "clicked", G_CALLBACK(
_preview_on_edit), preview);
gtk_toolbar_insert(GTK_TOOLBAR(preview->toolbar), preview->edit, -1);
/* zoom */
preview->zoom_fit = gtk_tool_button_new_from_stock(GTK_STOCK_ZOOM_FIT);
g_signal_connect_swapped(preview->zoom_fit, "clicked", G_CALLBACK(
_preview_on_zoom_fit), preview);
gtk_toolbar_insert(GTK_TOOLBAR(preview->toolbar), preview->zoom_fit,
-1);
preview->zoom_out = gtk_tool_button_new_from_stock(GTK_STOCK_ZOOM_OUT);
g_signal_connect_swapped(preview->zoom_out, "clicked", G_CALLBACK(
_preview_on_zoom_out), preview);
gtk_toolbar_insert(GTK_TOOLBAR(preview->toolbar), preview->zoom_out,
-1);
preview->zoom_in = gtk_tool_button_new_from_stock(GTK_STOCK_ZOOM_IN);
g_signal_connect_swapped(preview->zoom_in, "clicked", G_CALLBACK(
_preview_on_zoom_in), preview);
gtk_toolbar_insert(GTK_TOOLBAR(preview->toolbar), preview->zoom_in, -1);
gtk_box_pack_start(GTK_BOX(vbox), preview->toolbar, FALSE, TRUE, 0);
/* name */
preview->name = gtk_label_new(NULL);
@ -236,9 +259,13 @@ static void _refresh_reset(Preview * preview)
if(preview->source != 0)
g_source_remove(preview->source);
preview->source = 0;
preview->size = 96;
gtk_widget_hide(preview->toolbar);
gtk_widget_hide(GTK_WIDGET(preview->open));
gtk_widget_hide(GTK_WIDGET(preview->edit));
gtk_widget_hide(GTK_WIDGET(preview->zoom_fit));
gtk_widget_hide(GTK_WIDGET(preview->zoom_out));
gtk_widget_hide(GTK_WIDGET(preview->zoom_in));
gtk_widget_hide(preview->view_image);
gtk_widget_hide(preview->view_text);
}
@ -265,12 +292,17 @@ static gboolean _preview_on_idle_image(gpointer data)
GError * error = NULL;
preview->source = 0;
gtk_widget_show(GTK_WIDGET(preview->zoom_fit));
gtk_widget_show(GTK_WIDGET(preview->zoom_out));
gtk_widget_show(GTK_WIDGET(preview->zoom_in));
#if GTK_CHECK_VERSION(2, 6, 0)
if((pixbuf = gdk_pixbuf_new_from_file_at_scale(preview->path, 96, 96,
TRUE, &error)) == NULL)
#else
if((pixbuf = gdk_pixbuf_new_from_file_at_size(preview->path, 96, 96,
if((pixbuf = gdk_pixbuf_new_from_file_at_scale(preview->path,
preview->size, preview->size, TRUE,
&error)) == NULL)
#else
if((pixbuf = gdk_pixbuf_new_from_file_at_size(preview->path,
preview->size, preview->size, &error))
== NULL)
#endif
{
helper->error(helper->browser, error->message, 1);
@ -326,3 +358,45 @@ static void _preview_on_open(gpointer data)
if(preview->path != NULL)
mime_action(mime, "open", preview->path);
}
/* preview_on_zoom_fit */
static void _preview_on_zoom_fit(gpointer data)
{
Preview * preview = data;
preview->size = 96;
if(preview->source != 0)
g_source_remove(preview->source);
/* XXX may not always be an image */
preview->source = g_idle_add(_preview_on_idle_image, preview);
}
/* preview_on_zoom_in */
static void _preview_on_zoom_in(gpointer data)
{
Preview * preview = data;
preview->size = preview->size * 2;
if(preview->source != 0)
g_source_remove(preview->source);
/* XXX may not always be an image */
preview->source = g_idle_add(_preview_on_idle_image, preview);
}
/* preview_on_zoom_out */
static void _preview_on_zoom_out(gpointer data)
{
Preview * preview = data;
preview->size = preview->size / 2;
/* stick with a divider of 96 */
if(preview->size < 3)
preview->size = 3;
if(preview->source != 0)
g_source_remove(preview->source);
/* XXX may not always be an image */
preview->source = g_idle_add(_preview_on_idle_image, preview);
}