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Bug 396876 - "GTK file picker doesn't show preview of file" [p=ventnor.bugzilla@yahoo.com.au (Michael Ventnor) r+sr=roc a1.9=schrep]

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This commit is contained in:
reed@reedloden.com 2007-12-19 03:30:16 -08:00
parent 6bbd1d2825
commit b9993939d8
1 changed files with 67 additions and 0 deletions
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67
widget/src/gtk2/nsFilePicker.cpp
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@ -39,6 +39,7 @@
#include <gtk/gtkdialog.h>
#include <gtk/gtkstock.h>
#include <gtk/gtkmessagedialog.h>
#include <gtk/gtkimage.h>
#include "nsIFileURL.h"
#include "nsIURI.h"
@ -62,6 +63,8 @@
#define DECL_FUNC_PTR(func) static _##func##_fn _##func
#define GTK_FILE_CHOOSER(widget) ((GtkFileChooser*) widget)
#define MAX_PREVIEW_SIZE 180
PRLibrary *nsFilePicker::mGTK24 = nsnull;
nsILocalFile *nsFilePicker::mPrevDisplayDirectory = nsnull;
@ -101,6 +104,12 @@ typedef GSList* (*_gtk_file_chooser_list_filters_fn)(GtkFileChooser* chooser);
typedef GtkFileFilter* (*_gtk_file_filter_new_fn)();
typedef void (*_gtk_file_filter_add_pattern_fn)(GtkFileFilter* filter, const gchar* pattern);
typedef void (*_gtk_file_filter_set_name_fn)(GtkFileFilter* filter, const gchar* name);
typedef char* (*_gtk_file_chooser_get_preview_filename_fn)(GtkFileChooser *chooser);
typedef void (*_gtk_file_chooser_set_preview_widget_active_fn)(GtkFileChooser *chooser, gboolean active);
typedef void (*_gtk_image_set_from_pixbuf_fn)(GtkImage *image, GdkPixbuf *pixbuf);
typedef void (*_gtk_file_chooser_set_preview_widget_fn)(GtkFileChooser *chooser, GtkWidget *preview_widget);
typedef GtkWidget* (*_gtk_image_new_fn)();
typedef void (*_gtk_misc_set_padding_fn)(GtkMisc *misc, gint xpad, gint ypad);
DECL_FUNC_PTR(gtk_file_chooser_get_filename);
@ -117,6 +126,12 @@ DECL_FUNC_PTR(gtk_file_chooser_list_filters);
DECL_FUNC_PTR(gtk_file_filter_new);
DECL_FUNC_PTR(gtk_file_filter_add_pattern);
DECL_FUNC_PTR(gtk_file_filter_set_name);
DECL_FUNC_PTR(gtk_file_chooser_get_preview_filename);
DECL_FUNC_PTR(gtk_file_chooser_set_preview_widget_active);
DECL_FUNC_PTR(gtk_image_set_from_pixbuf);
DECL_FUNC_PTR(gtk_file_chooser_set_preview_widget);
DECL_FUNC_PTR(gtk_image_new);
DECL_FUNC_PTR(gtk_misc_set_padding);
static GtkWindow *
get_gtk_window_for_nsiwidget(nsIWidget *widget)
@ -201,6 +216,12 @@ nsFilePicker::LoadSymbolsGTK24()
GET_LIBGTK_FUNC(gtk_file_filter_new);
GET_LIBGTK_FUNC(gtk_file_filter_add_pattern);
GET_LIBGTK_FUNC(gtk_file_filter_set_name);
GET_LIBGTK_FUNC(gtk_file_chooser_get_preview_filename);
GET_LIBGTK_FUNC(gtk_file_chooser_set_preview_widget_active);
GET_LIBGTK_FUNC(gtk_image_set_from_pixbuf);
GET_LIBGTK_FUNC(gtk_file_chooser_set_preview_widget);
GET_LIBGTK_FUNC(gtk_image_new);
GET_LIBGTK_FUNC(gtk_misc_set_padding);
initialized = PR_TRUE;
@ -249,6 +270,46 @@ GetGtkFileChooserAction(PRInt16 aMode)
}
static void
UpdateFilePreviewWidget(GtkFileChooser *file_chooser,
gpointer preview_widget_voidptr)
{
GtkImage *preview_widget = GTK_IMAGE(preview_widget_voidptr);
char *image_filename = _gtk_file_chooser_get_preview_filename(file_chooser);
if (!image_filename) {
_gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return;
}
// We do this so GTK scales down images that are too big, but not scale up images that are too small
GdkPixbuf *preview_pixbuf = gdk_pixbuf_new_from_file(image_filename, NULL);
if (!preview_pixbuf) {
g_free(image_filename);
_gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return;
}
if (gdk_pixbuf_get_width(preview_pixbuf) > MAX_PREVIEW_SIZE || gdk_pixbuf_get_height(preview_pixbuf) > MAX_PREVIEW_SIZE) {
g_object_unref(preview_pixbuf);
preview_pixbuf = gdk_pixbuf_new_from_file_at_size(image_filename, MAX_PREVIEW_SIZE, MAX_PREVIEW_SIZE, NULL);
}
g_free(image_filename);
if (!preview_pixbuf) {
_gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return;
}
// This is the easiest way to do center alignment without worrying about containers
// Minimum 3px padding each side (hence the 6) just to make things nice
gint x_padding = (MAX_PREVIEW_SIZE + 6 - gdk_pixbuf_get_width(preview_pixbuf)) / 2;
_gtk_misc_set_padding(GTK_MISC(preview_widget), x_padding, 0);
_gtk_image_set_from_pixbuf(preview_widget, preview_pixbuf);
g_object_unref(preview_pixbuf);
_gtk_file_chooser_set_preview_widget_active(file_chooser, TRUE);
}
NS_IMPL_ISUPPORTS1(nsFilePicker, nsIFilePicker)
nsFilePicker::nsFilePicker()
@ -513,6 +574,12 @@ nsFilePicker::Show(PRInt16 *aReturn)
accept_button, GTK_RESPONSE_ACCEPT,
NULL);
if (mMode == GTK_FILE_CHOOSER_ACTION_OPEN || mMode == GTK_FILE_CHOOSER_ACTION_SAVE) {
GtkWidget *img_preview = _gtk_image_new();
_gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(file_chooser), img_preview);
g_signal_connect(file_chooser, "update-preview", G_CALLBACK(UpdateFilePreviewWidget), img_preview);
}
if (parent_widget && parent_widget->group) {
gtk_window_group_add_window(parent_widget->group, GTK_WINDOW(file_chooser));
}