我们从Python开源项目中，提取了以下13个代码示例，用于说明如何使用gi.repository.Gdk.cairo_set_source_pixbuf()。
def do_render(self, cr, widget, bg_area, cell_area, flags): pixbuf = GdkPixbuf.Pixbuf.new(Colorspace.RGB, True, 8, cell_area.width, cell_area.height) Gdk.cairo_set_source_pixbuf(cr, pixbuf, cell_area.x, cell_area.y) ## Draw a filled square cr.set_source_rgb(*self.rgb_triplet) cr.rectangle(cell_area.x+1, cell_area.y+1, cell_area.width-2, cell_area.height-2) cr.fill() ## Outline it black cr.set_source_rgb(0, .8, 0) cr.rectangle(cell_area.x+1, cell_area.y+1, cell_area.width-2, cell_area.height-2) cr.stroke() ## Draw a blue line #cr.set_source_rgb(0, 0, .8) #cr.move_to(cell_area.x+5, cell_area.y+5) #cr.line_to(cell_area.x+15, cell_area.y+15) #cr.stroke() ## Semitransparent overwrite of whole image #cr.set_source_rgb(0,0,0) #cr.paint_with_alpha(self.alpha)
def do_render(self, cr, widget, bg_area, cell_area, flags): pixbuf = GdkPixbuf.Pixbuf.new(Colorspace.RGB, True, 8, cell_area.width, cell_area.height) Gdk.cairo_set_source_pixbuf(cr, pixbuf, cell_area.x, cell_area.y) ## Draw a filled square cr.set_source_rgb(rgb_triplet) cr.rectangle(cell_area.x+1, cell_area.y+1, cell_area.width-2, cell_area.height-2) cr.fill() ## Outline it black cr.set_source_rgb(0, .8, 0) cr.rectangle(cell_area.x+1, cell_area.y+1, cell_area.width-2, cell_area.height-2) cr.stroke() ## Draw blue line #cr.set_source_rgb(0, 0, .8) #cr.move_to(cell_area.x+5, cell_area.y+5) #cr.line_to(cell_area.x+15, cell_area.y+15) #cr.stroke() ## Semitransparent overwrite of whole image cr.set_source_rgb(0,0,0) cr.paint_with_alpha(self.alpha)
def drawn(self, widget, cr): if self._draw_image is None: return with self._size_lock: img = self._draw_image if self._show_orientation: img = img.copy() self._orient_scaled.composite( img, 0, 0, img.props.width, img.props.height, 0, 0, 1, 1, GdkPixbuf.InterpType.NEAREST, 215) img = img.rotate_simple(self._rotation) rect = self.get_allocation() Gdk.cairo_set_source_pixbuf(cr, img, (rect.width - img.props.width) // 2, (rect.height - img.props.height) // 2) cr.paint() self._draw_pending.clear()
def get_surface_from_pixbuf(pixbuf): surface = cairo.ImageSurface( cairo.FORMAT_ARGB32, pixbuf.get_width(), pixbuf.get_height()) micairo = cairo.Context(surface) micairo.save() Gdk.cairo_set_source_pixbuf(micairo, pixbuf, 0, 0) micairo.paint() micairo.restore() return surface
def get_surface_from_file(filename): if os.path.exists(filename): pixbuf = GdkPixbuf.Pixbuf.new_from_file(filename) if pixbuf: surface = cairo.ImageSurface( cairo.FORMAT_ARGB32, pixbuf.get_width(), pixbuf.get_height()) context = cairo.Context(surface) Gdk.cairo_set_source_pixbuf(context, pixbuf, 0, 0) context.paint() return surface return None
def draw(self, cr, highlight=False): pixbuf = GdkPixbuf.Pixbuf.new_from_file(self.path) sx = float(self.w)/float(pixbuf.get_width()) sy = float(self.h)/float(pixbuf.get_height()) cr.save() cr.translate(self.x0, self.y0 - self.h) cr.scale(sx, sy) Gdk.cairo_set_source_pixbuf(cr, pixbuf, 0, 0) cr.paint() cr.restore()
def do_draw(self, cr): a = self.get_allocation() #state = self.get_state_flags() context = self.get_style_context() ds_h = self._dropshadow.get_height() y = (a.height - ds_h) / 2 Gdk.cairo_set_source_pixbuf(cr, self._dropshadow, 0, y) cr.paint() # layout circle x = self._margin y = (a.height - ds_h) / 2 + self._margin w = a.width - 2 * self._margin h = a.width - 2 * self._margin cr.new_path() r = min(w, h) * 0.5 x += int((w - 2 * r) / 2) y += int((h - 2 * r) / 2) from math import pi cr.arc(r + x, r + y, r, 0, 2 * pi) cr.close_path() if self.is_active: color = context.get_background_color(Gtk.StateFlags.SELECTED) else: color = context.get_background_color(Gtk.StateFlags.INSENSITIVE) Gdk.cairo_set_source_rgba(cr, color) cr.fill() for child in self: self.propagate_draw(child, cr)
def do_draw(self, cr): cr.save() A = self.get_allocation() if self._pressed: cr.translate(1, 1) if self.has_focus(): Gtk.render_focus(self.get_style_context(), cr, 3, 3, A.width - 6, A.height - 6) for child in self: self.propagate_draw(child, cr) if self.is_installed: # paint installed tick overlay if self.get_direction() != Gtk.TextDirection.RTL: x = y = 36 else: x = A.width - 56 y = 36 Gdk.cairo_set_source_pixbuf(cr, self._overlay, x, y) cr.paint() cr.restore()
def _render_icon(self, cr, app, cell_area, xpad, ypad, is_rtl): # calc offsets so icon is nicely centered self.icon = self.model.get_icon(app) self.icon_x_offset = xpad + cell_area.x self.icon_y_offset = ypad + cell_area.y xo = (self.pixbuf_width - self.icon.get_width()) / 2 if not is_rtl: x = cell_area.x + xo + xpad else: x = cell_area.x + cell_area.width + xo - self.pixbuf_width - xpad y = cell_area.y + ypad # draw appicon pixbuf Gdk.cairo_set_source_pixbuf(cr, self.icon, x, y) cr.paint() # draw overlay if application is installed if self.model.is_installed(app): if not is_rtl: x += (self.pixbuf_width - self.OVERLAY_SIZE + self.OVERLAY_XO) else: x -= self.OVERLAY_XO y += (self.pixbuf_width - self.OVERLAY_SIZE + self.OVERLAY_YO) Gdk.cairo_set_source_pixbuf(cr, self._installed, x, y) cr.paint()
def draw(self, cr, layout, width, dpi_x, dpi_y): from gi.repository import Gtk, Gdk img_width = self._width * dpi_x / 2.54 img_height = self._height * dpi_y / 2.54 if self._style == 'right': l_margin = width - img_width elif self._style == 'center': l_margin = (width - img_width) / 2.0 else: l_margin = 0 # load the image and get its extents pixbuf = resize_to_buffer(self._filename, [img_width, img_height], self._crop) pixbuf_width = pixbuf.get_width() pixbuf_height = pixbuf.get_height() # calculate the scale to fit image into the set extents scale = min(img_width / pixbuf_width, img_height / pixbuf_height) # draw the image cr.save() cr.translate(l_margin, 0) cr.scale(scale, scale) Gdk.cairo_set_source_pixbuf(cr, pixbuf, (img_width / scale - pixbuf_width) / 2, (img_height / scale - pixbuf_height) / 2) cr.rectangle(0 , 0, img_width / scale, img_height / scale) ##gcr.set_source_pixbuf(pixbuf, ##(img_width - pixbuf_width) / 2, ##(img_height - pixbuf_height) / 2) ##cr.rectangle(0 , 0, img_width, img_height) ##cr.scale(scale, scale) cr.fill() cr.restore() if DEBUG: cr.set_line_width(0.1) cr.set_source_rgb(1.0, 0, 0) cr.rectangle(l_margin, 0, img_width, img_height) cr.stroke() return (img_height)
def draw_overlay(self, context, width, height): if self.scroll_enable and self.message: context = cairo_context_from_gi(context) #print str(width) + " x " + str(height) #context.scale(width, height) #context.scale(width / 100, height / 100) #context.scale(100, 100) #context.set_source_rgb(1, 0, 0) #context.paint_with_alpha(1) #context.select_font_face("Helvetica") #context.set_font_face(None) #context.set_font_size(0.05) #context.move_to(0.1, 0.1) #context.show_text("Hello World") #context.rectangle(0, height * 0.60, width, 30) #context.rectangle(0, 0.60, 1, 0.1) context.set_source_rgb(1, 0, 0) context.rectangle(0, 0.55 * height, width, 0.15 * height) context.fill() #context.scale(1.0 / width, 1.0 / height) #context.translate(0, height * 0.60) layout = PangoCairo.create_layout(context) #font = Pango.FontDescription("Arial " + str(0.090 * height)) #font.set_family("Sans") #font.set_size(0.090 * height) #font.set_size(25) #font.set_stretch(Pango.Stretch.ULTRA_CONDENSED) font = Pango.font_description_from_string("Sans Condensed " + str(0.090 * height)) layout.set_font_description(font) layout.set_text(self.message, -1) (layout_width, layout_height) = layout.get_pixel_size() self.scroll_wrap = 1.0 + (float(layout_width) / float(width)) pos = (self.scroll_pos * width) - layout_width context.set_source_rgb(1, 1, 1) context.translate(pos, 0.55 * height) PangoCairo.update_layout(context, layout) PangoCairo.show_layout(context, layout) #context.set_line_width(0.1) #context.move_to(0, 0) #context.line_to(1, 0) #context.stroke() #pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size("/home/trans/Downloads/kitty.jpg", width, height) #Gdk.cairo_set_source_pixbuf(context, pixbuf, 0, 0) #context.stroke()
