static gboolean ctk_banner_expose_event(
GtkWidget *widget,
GdkEventExpose *event
)
{
CtkBanner *ctk_banner = CTK_BANNER(widget);
GdkRectangle *rects;
int n_rects;
int i;
/* copy the backing pixbuf into the exposed portion of the window */
gdk_region_get_rectangles(event->region, &rects, &n_rects);
for (i = 0; i < n_rects; i++) {
gdk_draw_pixbuf(widget->window,
widget->style->fg_gc[GTK_STATE_NORMAL],
ctk_banner->back.pixbuf,
rects[i].x, rects[i].y,
rects[i].x, rects[i].y,
rects[i].width, rects[i].height,
GDK_RGB_DITHER_NORMAL, 0, 0);
}
g_free(rects);
return FALSE;
}
/*
* CTK composited banner image widget creation
*
*/
GtkWidget* ctk_banner_image_new_with_callback(BannerArtworkType artwork,
ctk_banner_composite_callback callback,
void *data)
{
GtkWidget *image;
GtkWidget *hbox;
GtkWidget *frame;
image = ctk_banner_new(artwork);
if (!image) return NULL;
ctk_banner_set_composite_callback(CTK_BANNER(image), callback, data);
hbox = gtk_hbox_new(FALSE, 0);
frame = gtk_frame_new(NULL);
gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, TRUE, 0);
gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_IN);
gtk_container_add(GTK_CONTAINER(frame), image);
return hbox;
}
static void ctk_banner_size_request(
GtkWidget *widget,
GtkRequisition *requisition
)
{
CtkBanner *ctk_banner = CTK_BANNER(widget);
requisition->width = MAX(400,
ctk_banner->logo->w +
ctk_banner->artwork.w +
ctk_banner->logo_pad_x +
ctk_banner->artwork_pad_x);
requisition->height = ctk_banner->background->h;
}
static gboolean ctk_banner_draw_event(
GtkWidget *widget,
cairo_t *cr_i
)
{
CtkBanner *ctk_banner = CTK_BANNER(widget);
cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(widget));
/* copy the backing pixbuf into the exposed portion of the window */
gdk_cairo_set_source_pixbuf(cr, ctk_banner->back.pixbuf, 0, 0);
cairo_paint(cr);
cairo_destroy(cr);
return FALSE;
}
static void ctk_banner_finalize(
GObject *object
)
{
CtkBanner *ctk_banner = CTK_BANNER(object);
if (ctk_banner->back.pixbuf)
g_object_unref(ctk_banner->back.pixbuf);
if (ctk_banner->artwork.pixbuf)
g_object_unref(ctk_banner->artwork.pixbuf);
if (ctk_banner->logo->pixbuf)
g_object_unref(ctk_banner->logo->pixbuf);
if (ctk_banner->background->pixbuf)
g_object_unref(ctk_banner->background->pixbuf);
}
GtkWidget* ctk_banner_new(BannerArtworkType artwork)
{
GObject *object;
CtkBanner *ctk_banner;
const GdkPixdata *pixdata;
int tall, pad_x;
if (!select_artwork(artwork, &tall, &pad_x, &pixdata)) {
return NULL;
}
object = g_object_new(CTK_TYPE_BANNER, NULL);
ctk_banner = CTK_BANNER(object);
ctk_banner->back.pixbuf = NULL;
ctk_banner->artwork.pixbuf = NULL;
ctk_banner->artwork_pad_x = pad_x;
/* load the global images */
if (!Background.pixbuf) {
Background.pixbuf =
gdk_pixbuf_from_pixdata(&background_pixdata, TRUE, NULL);
Background.w = gdk_pixbuf_get_width(Background.pixbuf);
Background.h = gdk_pixbuf_get_height(Background.pixbuf);
}
g_object_ref(Background.pixbuf);
if (!TallBackground.pixbuf) {
TallBackground.pixbuf =
gdk_pixbuf_from_pixdata(&background_tall_pixdata, TRUE, NULL);
TallBackground.w = gdk_pixbuf_get_width(TallBackground.pixbuf);
TallBackground.h = gdk_pixbuf_get_height(TallBackground.pixbuf);
}
g_object_ref(TallBackground.pixbuf);
if (!Logo.pixbuf) {
Logo.pixbuf = gdk_pixbuf_from_pixdata(&logo_pixdata, TRUE, NULL);
Logo.w = gdk_pixbuf_get_width(Logo.pixbuf);
Logo.h = gdk_pixbuf_get_height(Logo.pixbuf);
}
g_object_ref(Logo.pixbuf);
if (!TallLogo.pixbuf) {
TallLogo.pixbuf =
gdk_pixbuf_from_pixdata(&logo_tall_pixdata, TRUE, NULL);
TallLogo.w = gdk_pixbuf_get_width(TallLogo.pixbuf);
TallLogo.h = gdk_pixbuf_get_height(TallLogo.pixbuf);
}
g_object_ref(TallLogo.pixbuf);
/*
* assign fields based on whether the artwork is tall; XXX these
* may need to be tweaked
*/
if (tall) {
ctk_banner->logo_pad_x = 11;
ctk_banner->logo_pad_y = 0;
ctk_banner->background = &TallBackground;
ctk_banner->logo = &TallLogo;
} else {
ctk_banner->logo_pad_x = 10;
ctk_banner->logo_pad_y = 10;
ctk_banner->background = &Background;
ctk_banner->logo = &Logo;
}
/* load the artwork pixbuf */
ctk_banner->artwork.pixbuf = gdk_pixbuf_from_pixdata(pixdata, TRUE, NULL);
ctk_banner->artwork.w =
gdk_pixbuf_get_width(ctk_banner->artwork.pixbuf);
ctk_banner->artwork.h =
gdk_pixbuf_get_height(ctk_banner->artwork.pixbuf);
return GTK_WIDGET(object);
}
static gboolean ctk_banner_configure_event(
GtkWidget *widget,
GdkEventConfigure *event
)
{
CtkBanner *ctk_banner = CTK_BANNER(widget);
int x, y, w, h, needed_w, needed_h;
/* free the pixbuf we already have one */
if (ctk_banner->back.pixbuf)
g_object_unref(ctk_banner->back.pixbuf);
/* allocate a backing pixbuf the size of the new window */
ctk_banner->back.pixbuf =
gdk_pixbuf_new(GDK_COLORSPACE_RGB, // colorSpace
FALSE, // has_alpha (no alpha needed for backing pixbuf)
gdk_pixbuf_get_bits_per_sample
(ctk_banner->background->pixbuf),
event->width,
event->height);
ctk_banner->back.w = gdk_pixbuf_get_width(ctk_banner->back.pixbuf);
ctk_banner->back.h = gdk_pixbuf_get_height(ctk_banner->back.pixbuf);
/* clear the backing pixbuf to black */
gdk_pixbuf_fill(ctk_banner->back.pixbuf, 0x00000000);
/* copy the base image into the backing pixbuf */
w = MIN(ctk_banner->background->w, ctk_banner->back.w);
h = MIN(ctk_banner->background->h, ctk_banner->back.h);
gdk_pixbuf_copy_area(ctk_banner->background->pixbuf, // src
0, // src_x
0, // src_y
w, // width
h, // height
ctk_banner->back.pixbuf, // dest
0, // dest_x
0); // dest_y
/*
* composite the logo into the backing pixbuf; positioned in the
* upper right corner of the backing pixbuf. We should only do
* this, though, if the backing pixbuf is large enough to contain
* the logo
*/
needed_w = ctk_banner->logo->w + ctk_banner->logo_pad_x;
needed_h = ctk_banner->logo->h + ctk_banner->logo_pad_y;
if ((ctk_banner->back.w >= needed_w) &&
(ctk_banner->back.h >= needed_h)) {
w = ctk_banner->logo->w;
h = ctk_banner->logo->h;
x = ctk_banner->back.w - w;
y = 0;
ctk_banner->logo_x = x - ctk_banner->logo_pad_x;
ctk_banner->logo_y = y + ctk_banner->logo_pad_y;
gdk_pixbuf_composite(ctk_banner->logo->pixbuf, // src
ctk_banner->back.pixbuf, // dest
ctk_banner->logo_x, // dest_x
ctk_banner->logo_y, // dest_y
w, // dest_width
h, // dest_height
ctk_banner->logo_x, // offset_x
ctk_banner->logo_y, // offset_y
1.0, // scale_x
1.0, // scale_y
GDK_INTERP_BILINEAR, // interp_type
255); // overall_alpha
}
/*
* composite the artwork into the lower left corner of the backing
* pixbuf
*/
needed_w = ctk_banner->artwork.w + ctk_banner->artwork_pad_x;
needed_h = ctk_banner->artwork.h;
if ((ctk_banner->back.w >= needed_w) &&
(ctk_banner->back.h >= needed_h)) {
w = ctk_banner->artwork.w;
h = ctk_banner->artwork.h;
x = 0;
y = ctk_banner->back.h - h;
ctk_banner->artwork_x = x + ctk_banner->artwork_pad_x;
ctk_banner->artwork_y = y;
gdk_pixbuf_composite(ctk_banner->artwork.pixbuf, // src
ctk_banner->back.pixbuf, // dest
ctk_banner->artwork_x, // dest_x
ctk_banner->artwork_y, // dest_y
w, // dest_width
h, // dest_height
ctk_banner->artwork_x, // offset_x
ctk_banner->artwork_y, // offset_y
1.0, // scale_x
1.0, // scale_y
GDK_INTERP_BILINEAR, // interp_type
255); // overall_alpha
/* Do any user-specific compositing */
if (ctk_banner->callback_func) {
ctk_banner->callback_func(ctk_banner, ctk_banner->callback_data);
}
}
return FALSE;
}
