// 根据chess_board不断更新界面的函数。在显示窗口时就被不断调用。
// 输入：控件draw_window。
// 返回值：void
void draw_main(GtkWidget * widget)
{
cairo_t * cr = gdk_cairo_create(widget->window);
gdk_cairo_set_source_pixbuf(cr,background,0,0);
cairo_paint(cr);
cairo_fill (cr);
for(int i=0;i<N;i++)
{
for(int j=0;j<N;j++)
{
if(chess_board[i*N+j]==1)
{
gdk_cairo_set_source_pixbuf(cr,A_pic,draw_position[i*N+j][0],draw_position[i*N+j][1]);
cairo_paint(cr);
cairo_fill (cr);
}
if(chess_board[i*N+j]==-1)
{
gdk_cairo_set_source_pixbuf(cr,B_pic,draw_position[i*N+j][0],draw_position[i*N+j][1]);
cairo_paint(cr);
cairo_fill (cr);
}
}
}
cairo_destroy(cr);
}
void plank_tests_drawing_docksurface_gaussian_blur (void) {
PlankDrawingColor color = {0};
PlankDrawingColor color2 = {0};
PlankDrawingDockSurface* surface = NULL;
PlankDrawingDockSurface* surface2 = NULL;
GdkPixbuf* pixbuf = NULL;
GdkPixbuf* _tmp0_ = NULL;
PlankDrawingDockSurface* _tmp1_ = NULL;
PlankDrawingDockSurface* _tmp2_ = NULL;
cairo_t* cr = NULL;
cairo_t* _tmp3_ = NULL;
cairo_t* _tmp4_ = NULL;
cairo_t* cr2 = NULL;
cairo_t* _tmp5_ = NULL;
cairo_t* _tmp6_ = NULL;
PlankDrawingColor _tmp7_ = {0};
PlankDrawingColor _tmp8_ = {0};
PlankDrawingColor _tmp9_ = {0};
PlankDrawingColor _tmp10_ = {0};
_tmp0_ = plank_drawing_drawing_service_load_icon (PLANK_TESTS_TEST_ICON, 256, 256);
_g_object_unref0 (pixbuf);
pixbuf = _tmp0_;
_tmp1_ = plank_drawing_dock_surface_new (256, 256);
_g_object_unref0 (surface);
surface = _tmp1_;
_tmp2_ = plank_drawing_dock_surface_new (256, 256);
_g_object_unref0 (surface2);
surface2 = _tmp2_;
_tmp3_ = plank_drawing_dock_surface_get_Context (surface);
_tmp4_ = _tmp3_;
cr = _tmp4_;
gdk_cairo_set_source_pixbuf (cr, pixbuf, (gdouble) 0, (gdouble) 0);
cairo_paint (cr);
_tmp5_ = plank_drawing_dock_surface_get_Context (surface2);
_tmp6_ = _tmp5_;
cr2 = _tmp6_;
gdk_cairo_set_source_pixbuf (cr2, pixbuf, (gdouble) 0, (gdouble) 0);
cairo_paint (cr2);
plank_drawing_dock_surface_gaussian_blur (surface, 7);
plank_drawing_dock_surface_gaussian_blur (surface, 15);
plank_drawing_dock_surface_gaussian_blur (surface, 31);
plank_drawing_dock_surface_gaussian_blur (surface2, 7);
plank_drawing_dock_surface_gaussian_blur (surface2, 15);
plank_drawing_dock_surface_gaussian_blur (surface2, 31);
plank_drawing_dock_surface_average_color (surface, &_tmp7_);
color = _tmp7_;
plank_drawing_dock_surface_average_color (surface2, &_tmp8_);
color2 = _tmp8_;
_tmp9_ = color;
_tmp10_ = color2;
_vala_assert (_plank_drawing_color_equal (&_tmp9_, &_tmp10_) == TRUE, "color == color2");
_g_object_unref0 (pixbuf);
_g_object_unref0 (surface2);
_g_object_unref0 (surface);
}
static void
update_display_preview (CcBackgroundPanel *panel,
GtkWidget *widget,
CcBackgroundItem *current_background)
{
CcBackgroundPanelPrivate *priv = panel->priv;
GtkAllocation allocation;
const gint preview_width = 309;
const gint preview_height = 168;
gint scale_factor;
GdkPixbuf *pixbuf;
cairo_t *cr;
gtk_widget_get_allocation (widget, &allocation);
if (!current_background)
return;
scale_factor = gtk_widget_get_scale_factor (widget);
pixbuf = cc_background_item_get_frame_thumbnail (current_background,
priv->thumb_factory,
preview_width,
preview_height,
scale_factor,
-2, TRUE);
cr = gdk_cairo_create (gtk_widget_get_window (widget));
gdk_cairo_set_source_pixbuf (cr,
pixbuf,
0, 0);
cairo_paint (cr);
g_object_unref (pixbuf);
pixbuf = NULL;
if (current_background == priv->current_background &&
panel->priv->display_screenshot != NULL)
{
pixbuf = gdk_pixbuf_scale_simple (panel->priv->display_screenshot,
preview_width,
preview_height,
GDK_INTERP_BILINEAR);
}
if (pixbuf)
{
gdk_cairo_set_source_pixbuf (cr,
pixbuf,
0, 0);
cairo_paint (cr);
g_object_unref (pixbuf);
}
cairo_destroy (cr);
}
static gboolean cvImageWidget_expose(GtkWidget* widget, GdkEventExpose* event, gpointer data)
{
#ifdef HAVE_OPENGL
CvWindow* window = (CvWindow*)data;
if (window->useGl)
{
drawGl(window);
return TRUE;
}
#else
(void)data;
#endif
CvImageWidget *image_widget = NULL;
cairo_t *cr = NULL;
GdkPixbuf *pixbuf = NULL;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (CV_IS_IMAGE_WIDGET (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (event->count > 0)
return FALSE;
cr = gdk_cairo_create(widget->window);
image_widget = CV_IMAGE_WIDGET (widget);
if( image_widget->scaled_image ){
// center image in available region
int x0 = (widget->allocation.width - image_widget->scaled_image->cols)/2;
int y0 = (widget->allocation.height - image_widget->scaled_image->rows)/2;
pixbuf = gdk_pixbuf_new_from_data(image_widget->scaled_image->data.ptr, GDK_COLORSPACE_RGB, false,
8, MIN(image_widget->scaled_image->cols, widget->allocation.width),
MIN(image_widget->scaled_image->rows, widget->allocation.height),
image_widget->scaled_image->step, NULL, NULL);
gdk_cairo_set_source_pixbuf(cr, pixbuf, x0, y0);
}
else if( image_widget->original_image ){
pixbuf = gdk_pixbuf_new_from_data(image_widget->original_image->data.ptr, GDK_COLORSPACE_RGB, false,
8, MIN(image_widget->original_image->cols, widget->allocation.width),
MIN(image_widget->original_image->rows, widget->allocation.height),
image_widget->original_image->step, NULL, NULL);
gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0);
}
cairo_paint(cr);
g_object_unref(pixbuf);
cairo_destroy(cr);
return TRUE;
}
static void
update_display_preview (CcBackgroundPanel *panel)
{
CcBackgroundPanelPrivate *priv = panel->priv;
GtkWidget *widget;
GtkAllocation allocation;
const gint preview_width = 416;
const gint preview_height = 248;
GdkPixbuf *pixbuf;
GIcon *icon;
cairo_t *cr;
widget = WID ("background-desktop-drawingarea");
gtk_widget_get_allocation (widget, &allocation);
if (!priv->current_background)
return;
icon = cc_background_item_get_frame_thumbnail (priv->current_background,
priv->thumb_factory,
preview_width,
preview_height,
-2, TRUE);
pixbuf = GDK_PIXBUF (icon);
cr = gdk_cairo_create (gtk_widget_get_window (widget));
gdk_cairo_set_source_pixbuf (cr,
pixbuf,
0, 0);
cairo_paint (cr);
g_object_unref (pixbuf);
pixbuf = NULL;
if (panel->priv->display_screenshot != NULL)
pixbuf = gdk_pixbuf_scale_simple (panel->priv->display_screenshot,
preview_width,
preview_height,
GDK_INTERP_BILINEAR);
if (pixbuf)
{
gdk_cairo_set_source_pixbuf (cr,
pixbuf,
0, 0);
cairo_paint (cr);
}
cairo_destroy (cr);
}
static cairo_pattern_t *
composite_image_onto_desktop (PanelBackground *background)
{
int width, height;
cairo_t *cr;
cairo_surface_t *surface;
cairo_pattern_t *pattern;
if (!background->desktop)
background->desktop = get_desktop_pixbuf (background);
if (!background->desktop)
return NULL;
width = gdk_pixbuf_get_width (background->desktop);
height = gdk_pixbuf_get_height (background->desktop);
surface = gdk_window_create_similar_surface (background->window,
CAIRO_CONTENT_COLOR_ALPHA,
width, height);
if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS) {
cairo_surface_destroy (surface);
return NULL;
}
cr = cairo_create (surface);
if(!gdk_window_check_composited_wm(background->window)){
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
gdk_cairo_set_source_pixbuf (cr, background->desktop, 0, 0);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
}
gdk_cairo_set_source_pixbuf (cr, background->transformed_image, 0, 0);
pattern = cairo_get_source (cr);
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
cairo_destroy (cr);
pattern = cairo_pattern_create_for_surface (surface);
cairo_surface_destroy (surface);
return pattern;
}
gboolean expose_event(GtkWidget * widget, GdkEventExpose * event, GdkPixbuf * pixbuf)
#endif
{
gint x, y;
if (pixbuf != NULL)
{
/* Copy the appropriate rectangle of the root window pixmap to the drawing area.
* All drawing areas are immediate children of the toplevel window, so the allocation yields the source coordinates directly. */
#ifdef USE_GTK3
#elif GTK_CHECK_VERSION(2,14,0)
cairo_t * cr = gdk_cairo_create (gtk_widget_get_window(widget));
gdk_window_get_origin(gtk_widget_get_window(widget), &x, &y);
#else
cairo_t * cr = gdk_cairo_create (widget->window);
gdk_window_get_origin(widget->window, &x, &y);
#endif
gdk_cairo_set_source_pixbuf (
cr,
pixbuf,
-x,
-y);
cairo_paint (cr);
#ifndef USE_GTK3
cairo_destroy(cr);
#endif
}
return FALSE;
}
static void
dnd_hints_realized_cb(GtkWidget *window, GtkWidget *pix)
{
GdkPixbuf *pixbuf;
cairo_surface_t *surface;
cairo_region_t *region;
cairo_t *cr;
pixbuf = gtk_image_get_pixbuf(GTK_IMAGE(pix));
surface = cairo_image_surface_create(CAIRO_FORMAT_A1,
gdk_pixbuf_get_width(pixbuf),
gdk_pixbuf_get_height(pixbuf));
cr = cairo_create(surface);
gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0);
cairo_paint(cr);
cairo_destroy(cr);
region = gdk_cairo_region_create_from_surface(surface);
gtk_widget_shape_combine_region(window, region);
cairo_region_destroy(region);
cairo_surface_destroy(surface);
}
static void sample_expose(GtkWidget* darea, GdkEventExpose* expose)
#endif
{
GtkAllocation allocation;
GdkPixbuf* pixbuf = g_object_get_data(G_OBJECT(darea), "sample-pixbuf");
int width = gdk_pixbuf_get_width(pixbuf);
int height = gdk_pixbuf_get_height(pixbuf);
gtk_widget_get_allocation (darea, &allocation);
int x = (allocation.width - width) / 2;
int y = (allocation.height - height) / 2;
GdkColor black, white;
gdk_color_parse ("black", &black);
gdk_color_parse ("white", &white);
#if !GTK_CHECK_VERSION (3, 0, 0)
cairo_t *cr = gdk_cairo_create (expose->window);
#endif
cairo_set_line_width (cr, 1);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
gdk_cairo_set_source_color (cr, &white);
cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
cairo_fill_preserve (cr);
gdk_cairo_set_source_color (cr, &black);
cairo_stroke (cr);
gdk_cairo_set_source_pixbuf(cr, pixbuf, x, y);
cairo_paint(cr);
#if !GTK_CHECK_VERSION (3, 0, 0)
cairo_destroy (cr);
#endif
}
static void
render_multi (
cairo_t *cr,
int width, int height,
MetaGradientType type)
{
GdkPixbuf *pixbuf;
#define N_COLORS 5
GdkRGBA colors[N_COLORS];
gdk_rgba_parse (&colors[0], "red");
gdk_rgba_parse (&colors[1], "blue");
gdk_rgba_parse (&colors[2], "orange");
gdk_rgba_parse (&colors[3], "pink");
gdk_rgba_parse (&colors[4], "green");
pixbuf = meta_gradient_create_multi (width, height,
colors, N_COLORS,
type);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
g_object_unref (G_OBJECT (pixbuf));
#undef N_COLORS
}
static gboolean
expose_callback (GtkWidget *event_box,
GdkEventButton *,
TSignalData *sigdata)
{
cairo_t *cr;
if (sigdata->event_box != NULL)
cr = gdk_cairo_create (GDK_DRAWABLE (sigdata->event_box->window));
else
{
cr = gdk_cairo_create (GDK_DRAWABLE (event_box->window));
sigdata->event_box = event_box;
}
if (sigdata->image != NULL)
{
GdkPixbuf *pxbf = gtk_image_get_pixbuf(GTK_IMAGE(sigdata->image));
gdk_cairo_set_source_pixbuf (cr, pxbf, 0,0);
cairo_paint (cr);
draw_grid(cr, sigdata->idata);
}
return TRUE;
}
static void draw_album_art (cairo_t * cr)
{
g_return_if_fail (area);
if (area->pb != NULL)
{
gdk_cairo_set_source_pixbuf (cr, area->pb, SPACING, SPACING);
cairo_paint_with_alpha (cr, area->alpha);
}
if (area->last_pb != NULL)
{
gdk_cairo_set_source_pixbuf (cr, area->last_pb, SPACING, SPACING);
cairo_paint_with_alpha (cr, area->last_alpha);
}
}
static gboolean
render_custom (GsdMediaKeysWindow *window,
cairo_t *cr,
double _x0,
double _y0,
double width,
double height)
{
GdkPixbuf *pixbuf;
int icon_size;
icon_size = (int)width;
pixbuf = load_pixbuf (window, window->priv->icon_name, icon_size);
if (pixbuf == NULL) {
char *name;
if (gtk_widget_get_direction (GTK_WIDGET (window)) == GTK_TEXT_DIR_RTL)
name = g_strdup_printf ("%s-rtl", window->priv->icon_name);
else
name = g_strdup_printf ("%s-ltr", window->priv->icon_name);
pixbuf = load_pixbuf (window, name, icon_size);
g_free (name);
if (pixbuf == NULL)
return FALSE;
}
gdk_cairo_set_source_pixbuf (cr, pixbuf, _x0, _y0);
cairo_paint_with_alpha (cr, GSD_OSD_WINDOW_FG_ALPHA);
g_object_unref (pixbuf);
return TRUE;
}
static void
icon_shape_renderer (cairo_t *cr,
PangoAttrShape *attr,
gboolean do_path,
gpointer user_data)
{
IconShapeData *data = user_data;
gdouble x, y;
cairo_get_current_point (cr, &x, &y);
if (GPOINTER_TO_UINT (attr->data) == data->placeholder) {
gdouble ascent;
gdouble height;
GdkPixbuf *pixbuf;
GtkIconInfo *info;
ascent = pango_units_to_double (attr->ink_rect.y);
height = pango_units_to_double (attr->ink_rect.height);
info = gtk_icon_theme_lookup_by_gicon (gtk_icon_theme_get_default (),
data->icon,
(gint)height,
GTK_ICON_LOOKUP_FORCE_SIZE | GTK_ICON_LOOKUP_USE_BUILTIN);
pixbuf = gtk_icon_info_load_icon (info, NULL);
g_object_unref (info);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_reset_clip (cr);
gdk_cairo_set_source_pixbuf (cr, pixbuf, x, y + ascent);
cairo_paint (cr);
g_object_unref (pixbuf);
}
}
static void port_display_expose(GdkEventExpose *ev,
GtkWidget *widget, GdkRectangle *rect, gdouble sliderstate, GdkPixbuf *image)
{
cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(widget));
GxPortDisplay *port_display = GX_PORT_DISPLAY(widget);
GdkRegion *region;
region = gdk_region_rectangle (&widget->allocation);
gdk_region_intersect (region, ev->region);
gdk_cairo_region (cr, region);
cairo_clip (cr);
gdk_cairo_set_source_pixbuf(cr, image, rect->x - (rect->width-(gint)sliderstate), rect->y);
cairo_rectangle(cr, rect->x, rect->y, rect->width, rect->height);
cairo_fill(cr);
if (port_display->cutoff_low + port_display->cutoff_high) {
cairo_set_source_rgba (cr, 0.8, 0.1, 0.1, 0.4);
cairo_set_line_width(cr, rect->height);
gint low = rect->width * port_display->cutoff_low * 0.01;
gint high = (rect->width* port_display->cutoff_high * 0.01)-2;
gint lw = rect->height/2;
cairo_move_to(cr,rect->x, rect->y+lw);
cairo_line_to(cr,rect->x + low, rect->y+lw);
cairo_stroke (cr);
cairo_move_to(cr,rect->width - high, rect->y+lw);
cairo_line_to(cr,rect->width+2, rect->y+lw);
cairo_stroke (cr);
cairo_set_source_rgba (cr, 0.1, 0.6, 0.1, 0.4);
cairo_move_to(cr,rect->x+ low, rect->y+lw);
cairo_line_to(cr,rect->width - high, rect->y+lw);
cairo_stroke (cr);
}
cairo_destroy(cr);
gdk_region_destroy (region);
}
static gboolean
render_speaker (GsdMediaKeysWindow *window,
cairo_t *cr,
double _x0,
double _y0,
double width,
double height)
{
GdkPixbuf *pixbuf;
const char *icon_name;
int icon_size;
icon_name = get_image_name_for_volume (window->priv->volume_muted,
window->priv->volume_level);
icon_size = (int)width;
pixbuf = load_pixbuf (window, icon_name, icon_size);
if (pixbuf == NULL) {
return FALSE;
}
gdk_cairo_set_source_pixbuf (cr, pixbuf, _x0, _y0);
cairo_paint_with_alpha (cr, GSD_OSD_WINDOW_FG_ALPHA);
g_object_unref (pixbuf);
return TRUE;
}
static void
render_interwoven_func (
cairo_t *cr,
int width, int height)
{
GdkPixbuf *pixbuf;
#define N_COLORS 4
GdkRGBA colors[N_COLORS];
gdk_rgba_parse (&colors[0], "red");
gdk_rgba_parse (&colors[1], "blue");
gdk_rgba_parse (&colors[2], "pink");
gdk_rgba_parse (&colors[3], "green");
pixbuf = meta_gradient_create_interwoven (width, height,
colors, height / 10,
colors + 2, height / 14);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
g_object_unref (G_OBJECT (pixbuf));
}
/**
* draw_tile_pixmap
* @tileno: Graphics tile number
* @pno: Number of graphics set
* @x: x position in grid squares
* @y: y position in grid squares
* @cr: context to draw on
*
* Description:
* Draws tile pixmap @tileno from graphics set @pno at (@x, @y) in
* a widget @area
**/
static void
draw_tile_pixmap (gint tileno, gint x, gint y, cairo_t * cr)
{
if ((x & 1) ^ (y & 1)) {
gdk_cairo_set_source_rgba (cr, &dark_background);
} else {
gdk_cairo_set_source_rgba (cr, &light_background);
}
x *= tile_width;
y *= tile_height;
cairo_rectangle (cr, x, y, tile_width, tile_height);
cairo_fill (cr);
if (rerender_needed)
render_graphics ();
if ((tileno < 0) || (tileno >= SCENARIO_PIXMAP_WIDTH)) {
/* nothing */
} else {
gdk_cairo_set_source_pixbuf (cr, theme_pixbuf, x - tileno * tile_width, y);
cairo_rectangle (cr, x, y, tile_width, tile_height);
cairo_fill (cr);
}
}
static gboolean
render_eject (GsdMediaKeysWindow *window,
cairo_t *cr,
double x0,
double y0,
double width,
double height)
{
GdkPixbuf *pixbuf;
int icon_size;
const char *icon_name;
icon_name = "media-eject";
icon_size = (int)width;
pixbuf = load_pixbuf (window, icon_name, icon_size);
if (pixbuf == NULL) {
return FALSE;
}
gdk_cairo_set_source_pixbuf (cr, pixbuf, x0, y0);
cairo_paint_with_alpha (cr, FG_ALPHA);
g_object_unref (pixbuf);
return TRUE;
}
/***********************************************
* ge_cairo_pixbuf_pattern -
*
* Create A Tiled Pixbuf Pattern
***********************************************/
CairoPattern*
ge_cairo_pixbuf_pattern(GdkPixbuf *pixbuf)
{
CairoPattern * result;
cairo_pattern_t *pattern;
cairo_t *canvas;
cairo_surface_t * surface;
gint width, height;
width = gdk_pixbuf_get_width(pixbuf);
height = gdk_pixbuf_get_height(pixbuf);
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
canvas = cairo_create(surface);
gdk_cairo_set_source_pixbuf (canvas, pixbuf, 0, 0);
cairo_rectangle (canvas, 0, 0, width, height);
cairo_fill (canvas);
cairo_destroy(canvas);
pattern = cairo_pattern_create_for_surface (surface);
cairo_surface_destroy(surface);
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
result = ge_cairo_pattern_pattern (pattern);
cairo_pattern_destroy (pattern);
return result;
}
static gboolean
on_draw(XmrButton *button, cairo_t *cr, gpointer data)
{
XmrButtonPrivate *priv = button->priv;
cairo_surface_t *image;
GdkPixbuf *pixbuf = priv->images[priv->state];
gint image_width, image_height;
if (priv->type == XMR_BUTTON_NORMAL || pixbuf == NULL)
return GTK_WIDGET_CLASS(xmr_button_parent_class)->draw(GTK_WIDGET(button), cr);
image_width = gdk_pixbuf_get_width(pixbuf);
image_height = gdk_pixbuf_get_height(pixbuf);
image = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, image_width, image_height);
if (image == NULL)
return FALSE;
cairo_set_source_surface(cr, image, 0, 0);
gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0);
cairo_paint(cr);
cairo_surface_destroy(image);
return TRUE;
}
static gint
on_draw(GtkWidget *widget, cairo_t *cr, gpointer userdata) {
GdkPixbuf *pixbuf;
pixbuf = gdk_pixbuf_new_from_file("/usr/share/themes/Ambiance/gtk-2.0/apps/img/panel.png", NULL);
if (!pixbuf) {
pixbuf = gdk_pixbuf_new_from_file("/usr/share/lxpanel/images/lubuntu-background.png", NULL);
}
if (!pixbuf) {
pixbuf = gdk_pixbuf_new_from_file("/usr/share/themes/Greybird/ubiquity-panel-bg.png", NULL);
}
if (!pixbuf) {
pixbuf = gdk_pixbuf_new_from_file("/usr/share/budgie-desktop/ubiquity-panel-bg.png", NULL);
}
if (!pixbuf) {
pixbuf = gdk_pixbuf_new_from_file("/usr/share/ubiquity/pixmaps/panel.png", NULL);
}
if (pixbuf) {
gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0);
cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_PAD);
cairo_paint(cr);
g_object_unref(pixbuf);
} else {
g_warning("Could not find background image.");
}
struct {
GtkWidget *container;
cairo_t *cr;
} data;
data.container = widget;
data.cr = cr;
gtk_container_forall (GTK_CONTAINER(widget), draw_child, &data);
return FALSE;
}
WG_PRIVATE gboolean
on_expose(GtkWidget *widget, cairo_t *cr, gpointer data)
{
Gui_display *display = NULL;
Gui_display_line *line = NULL;
Iterator itr;
display = (Gui_display*)data;
cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
cairo_paint(cr);
if (display->pixbuf != NULL){
gdk_cairo_set_source_pixbuf(cr,
display->pixbuf,
display->widget_width, display->widget_height);
cairo_paint(cr);
iterator_list_init(&itr, &display->lines,
GET_OFFSET(Gui_display_line, list));
while((line = iterator_list_next(&itr)) != NULL){
paint_line(cr, line);
}
cairo_fill(cr);
}
return TRUE;
}
static gboolean
cheese_widget_logo_draw (GtkWidget *w,
cairo_t *cr,
gpointer user_data)
{
const char *icon_name;
GdkPixbuf *pixbuf, *logo;
GError *error = NULL;
GtkAllocation allocation;
guint s_width, s_height, d_width, d_height;
float ratio;
gtk_widget_get_allocation (w, &allocation);
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
icon_name = g_object_get_data (G_OBJECT (w), "icon-name");
if (icon_name == NULL) {
cairo_paint (cr);
return FALSE;
}
cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
d_width = allocation.width;
d_height = allocation.height - (allocation.height / 3);
pixbuf = cheese_widget_load_pixbuf (w, icon_name, d_height, &error);
if (pixbuf == NULL)
{
g_warning ("Could not load icon '%s': %s", icon_name, error->message);
g_error_free (error);
return FALSE;
}
s_width = gdk_pixbuf_get_width (pixbuf);
s_height = gdk_pixbuf_get_height (pixbuf);
if ((gfloat) d_width / s_width > (gfloat) d_height / s_height)
{
ratio = (gfloat) d_height / s_height;
}
else
{
ratio = (gfloat) d_width / s_width;
}
s_width *= ratio;
s_height *= ratio;
logo = gdk_pixbuf_scale_simple (pixbuf, s_width, s_height, GDK_INTERP_BILINEAR);
gdk_cairo_set_source_pixbuf (cr, logo, (allocation.width - s_width) / 2, (allocation.height - s_height) / 2);
cairo_paint (cr);
g_object_unref (logo);
g_object_unref (pixbuf);
return FALSE;
}
void _gx_knob_expose(GtkWidget *widget, GdkRectangle *image_rect, gdouble knobstate,
GdkPixbuf *knob_image, gint framecount, int has_focus)
{
int findex;
double angle = scale_zero + knobstate * 2 * (M_PI - scale_zero);
const double pointer_off = 5;
double radius = min(image_rect->width-pointer_off, image_rect->height-pointer_off) / 2;
double lengh_x = (image_rect->x+radius+pointer_off/2) - radius * sin(angle);
double lengh_y = (image_rect->y+radius+pointer_off/2) + radius * cos(angle);
double radius1 = min(image_rect->width, image_rect->height) / 2;
if (framecount > 1) {
framecount--; // zero based index
findex = (int)(framecount * knobstate);
cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(widget));
gdk_cairo_set_source_pixbuf(cr, knob_image, image_rect->x - (image_rect->width * findex), image_rect->y);
cairo_rectangle(cr, image_rect->x, image_rect->y, image_rect->width, image_rect->height);
cairo_fill(cr);
cairo_destroy (cr);
}
else {
cairo_t *cr = gdk_cairo_create(GDK_DRAWABLE(widget->window));
if (gtk_widget_has_focus(widget)) {
gtk_paint_focus(widget->style, widget->window, GTK_STATE_NORMAL, NULL, widget, NULL,
image_rect->x, image_rect->y, image_rect->width, image_rect->height);
}
gdk_cairo_set_source_pixbuf(cr, knob_image, image_rect->x-0.5, image_rect->y-0.5);
cairo_rectangle(cr, image_rect->x, image_rect->y, image_rect->width, image_rect->height);
cairo_fill(cr);
_gx_knob_draw_indicator(cr, image_rect, knobstate);
/** this is to create a pointer rotating on the knob with painting funktions **/
cairo_set_source_rgb(cr, 0.1, 0.1, 0.1);
cairo_set_line_width(cr, 5.0);
cairo_move_to(cr, image_rect->x+radius1, image_rect->y+radius1);
cairo_line_to(cr,lengh_x,lengh_y);
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0.9, 0.9, 0.9);
cairo_set_line_width(cr, 1.0);
cairo_move_to(cr, image_rect->x+radius1, image_rect->y+radius1);
cairo_line_to(cr,lengh_x,lengh_y);
cairo_stroke(cr);
_gx_knob_draw_arc(widget, cr, image_rect, knobstate, has_focus);
cairo_destroy(cr);
}
}
static gboolean
pattern_value_parse (GtkCssParser *parser,
GFile *base,
GValue *value)
{
if (_gtk_css_parser_begins_with (parser, '-'))
{
g_value_unset (value);
g_value_init (value, GTK_TYPE_GRADIENT);
return gradient_value_parse (parser, base, value);
}
else
{
GError *error = NULL;
gchar *path;
GdkPixbuf *pixbuf;
GFile *file;
cairo_surface_t *surface;
cairo_pattern_t *pattern;
cairo_t *cr;
cairo_matrix_t matrix;
file = _gtk_css_parse_url (parser, base);
if (file == NULL)
return FALSE;
path = g_file_get_path (file);
g_object_unref (file);
pixbuf = gdk_pixbuf_new_from_file (path, &error);
g_free (path);
if (pixbuf == NULL)
{
_gtk_css_parser_take_error (parser, error);
return FALSE;
}
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
cr = cairo_create (surface);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
cairo_paint (cr);
pattern = cairo_pattern_create_for_surface (surface);
cairo_matrix_init_scale (&matrix,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
cairo_pattern_set_matrix (pattern, &matrix);
cairo_surface_destroy (surface);
cairo_destroy (cr);
g_object_unref (pixbuf);
g_value_take_boxed (value, pattern);
}
return TRUE;
}
static cairo_surface_t *
ev_document_misc_render_thumbnail_frame (GtkWidget *widget,
int width,
int height,
gboolean inverted_colors,
GdkPixbuf *source_pixbuf,
cairo_surface_t *source_surface)
{
GtkStyleContext *context = gtk_widget_get_style_context (widget);
GtkStateFlags state = gtk_widget_get_state_flags (widget);
int width_r, height_r;
int width_f, height_f;
cairo_surface_t *surface;
cairo_t *cr;
GtkBorder border = {0, };
if (source_surface) {
width_r = cairo_image_surface_get_width (source_surface);
height_r = cairo_image_surface_get_height (source_surface);
} else if (source_pixbuf) {
g_return_val_if_fail (GDK_IS_PIXBUF (source_pixbuf), NULL);
width_r = gdk_pixbuf_get_width (source_pixbuf);
height_r = gdk_pixbuf_get_height (source_pixbuf);
} else {
width_r = width;
height_r = height;
}
gtk_style_context_save (context);
gtk_style_context_add_class (context, "page-thumbnail");
if (inverted_colors)
gtk_style_context_add_class (context, "inverted");
gtk_style_context_get_border (context, state, &border);
width_f = width_r + border.left + border.right;
height_f = height_r + border.top + border.bottom;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
width_f, height_f);
cr = cairo_create (surface);
if (source_surface) {
cairo_set_source_surface (cr, source_surface, border.left, border.top);
cairo_paint (cr);
} else if (source_pixbuf) {
gdk_cairo_set_source_pixbuf (cr, source_pixbuf, border.left, border.top);
cairo_paint (cr);
} else {
gtk_render_background (context, cr, 0, 0, width_f, height_f);
}
gtk_render_frame (context, cr, 0, 0, width_f, height_f);
cairo_destroy (cr);
gtk_style_context_restore (context);
return surface;
}
/* Expose callback for the drawing area */
static gboolean
draw_cb (GtkWidget *widget, cairo_t *cr, gpointer data)
{
gdk_cairo_set_source_pixbuf (cr, frame, 0, 0);
cairo_paint (cr);
return TRUE;
}
static gboolean draw (GtkWidget *widget, cairo_t *cr)
{
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file("./background.png",NULL);
gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_paint(cr);
return FALSE;
}
static gboolean
gtk_css_image_url_parse (GtkCssImage *image,
GtkCssParser *parser)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
GdkPixbuf *pixbuf;
GFile *file;
cairo_t *cr;
GError *error = NULL;
GFileInputStream *input;
file = _gtk_css_parser_read_url (parser);
if (file == NULL)
return FALSE;
/* We special case resources here so we can use
gdk_pixbuf_new_from_resource, which in turn has some special casing
for GdkPixdata files to avoid duplicating the memory for the pixbufs */
if (g_file_has_uri_scheme (file, "resource"))
{
char *uri = g_file_get_uri (file);
char *resource_path = g_uri_unescape_string (uri + strlen ("resource://"), NULL);
pixbuf = gdk_pixbuf_new_from_resource (resource_path, &error);
g_free (resource_path);
g_free (uri);
}
else
{
input = g_file_read (file, NULL, &error);
if (input == NULL)
{
_gtk_css_parser_take_error (parser, error);
return FALSE;
}
pixbuf = gdk_pixbuf_new_from_stream (G_INPUT_STREAM (input), NULL, &error);
g_object_unref (input);
}
g_object_unref (file);
if (pixbuf == NULL)
{
_gtk_css_parser_take_error (parser, error);
return FALSE;
}
url->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
cr = cairo_create (url->surface);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
g_object_unref (pixbuf);
return TRUE;
}