gdk_draw_segments
GdkSegment
gdk_draw_rectangle
-gdk_draw_arc
gdk_draw_polygon
gdk_draw_trapezoids
GdkTrapezoid
@height:
-<!-- ##### FUNCTION gdk_draw_arc ##### -->
-<para>
-</para>
-
-@drawable:
-@gc:
-@filled:
-@x:
-@y:
-@width:
-@height:
-@angle1:
-@angle2:
-
-
<!-- ##### FUNCTION gdk_draw_polygon ##### -->
<para>
</para>
gboolean
expose_event_callback (GtkWidget *widget, GdkEventExpose *event, gpointer data)
{
- gdk_draw_arc (widget->window,
- widget->style->fg_gc[gtk_widget_get_state (widget)],
- TRUE,
- 0, 0, widget->allocation.width, widget->allocation.height,
- 0, 64 * 360);
+ cairo_t *cr;
+
+ cr = gdk_cairo_create (event->window);
+
+ cairo_set_source_rgb (cr, 0.0, 0.0, 1.0);
+ cairo_paint (cr);
+
+ cairo_destroy (cr);
return TRUE;
}
}
}
-static void
-gdk_directfb_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gint filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2)
-{
- D_UNIMPLEMENTED();
-}
-
static void
gdk_directfb_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
drawable_class->create_gc = _gdk_directfb_gc_new;
drawable_class->draw_rectangle = gdk_directfb_draw_rectangle;
- drawable_class->draw_arc = gdk_directfb_draw_arc;
drawable_class->draw_polygon = gdk_directfb_draw_polygon;
drawable_class->draw_drawable = gdk_directfb_draw_drawable;
drawable_class->draw_points = gdk_directfb_draw_points;
gdk_drawable_get_visible_region
gdk_drawable_get_visual
gdk_drawable_set_colormap
-gdk_draw_arc
gdk_draw_drawable
gdk_draw_glyphs
gdk_draw_glyphs_transformed
width, height);
}
-/**
- * gdk_draw_arc:
- * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
- * @gc: a #GdkGC.
- * @filled: %TRUE if the arc should be filled, producing a 'pie slice'.
- * @x: the x coordinate of the left edge of the bounding rectangle.
- * @y: the y coordinate of the top edge of the bounding rectangle.
- * @width: the width of the bounding rectangle.
- * @height: the height of the bounding rectangle.
- * @angle1: the start angle of the arc, relative to the 3 o'clock position,
- * counter-clockwise, in 1/64ths of a degree.
- * @angle2: the end angle of the arc, relative to @angle1, in 1/64ths
- * of a degree.
- *
- * Draws an arc or a filled 'pie slice'. The arc is defined by the bounding
- * rectangle of the entire ellipse, and the start and end angles of the part
- * of the ellipse to be drawn.
- **/
-void
-gdk_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2)
-{
- g_return_if_fail (GDK_IS_DRAWABLE (drawable));
- g_return_if_fail (GDK_IS_GC (gc));
-
- if (width < 0 || height < 0)
- {
- gint real_width;
- gint real_height;
-
- gdk_drawable_get_size (drawable, &real_width, &real_height);
-
- if (width < 0)
- width = real_width;
- if (height < 0)
- height = real_height;
- }
-
- GDK_DRAWABLE_GET_CLASS (drawable)->draw_arc (drawable, gc, filled,
- x, y, width, height, angle1, angle2);
-}
-
/**
* gdk_draw_polygon:
* @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
gint y,
gint width,
gint height);
- void (*draw_arc) (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2);
void (*draw_polygon) (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
gint y,
gint width,
gint height);
-void gdk_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2);
void gdk_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
}
-static void
-gdk_offscreen_window_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2)
-{
- GdkOffscreenWindow *offscreen = GDK_OFFSCREEN_WINDOW (drawable);
- GdkDrawable *real_drawable = get_real_drawable (offscreen);
-
- gdk_draw_arc (real_drawable,
- gc,
- filled,
- x,
- y,
- width,
- height,
- angle1,
- angle2);
- add_damage (offscreen, x, y, width, height, !filled);
-}
-
static void
gdk_offscreen_window_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
drawable_class->get_composite_drawable = gdk_offscreen_window_get_composite_drawable;
drawable_class->draw_rectangle = gdk_offscreen_window_draw_rectangle;
- drawable_class->draw_arc = gdk_offscreen_window_draw_arc;
drawable_class->draw_polygon = gdk_offscreen_window_draw_polygon;
drawable_class->draw_drawable_with_src = gdk_offscreen_window_draw_drawable;
drawable_class->draw_points = gdk_offscreen_window_draw_points;
gint y,
gint width,
gint height);
-static void gdk_pixmap_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2);
static void gdk_pixmap_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
drawable_class->create_gc = gdk_pixmap_create_gc;
drawable_class->draw_rectangle = gdk_pixmap_draw_rectangle;
- drawable_class->draw_arc = gdk_pixmap_draw_arc;
drawable_class->draw_polygon = gdk_pixmap_draw_polygon;
drawable_class->draw_drawable_with_src = gdk_pixmap_draw_drawable;
drawable_class->draw_points = gdk_pixmap_draw_points;
x, y, width, height);
}
-static void
-gdk_pixmap_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2)
-{
- GdkPixmapObject *private = (GdkPixmapObject *)drawable;
-
- _gdk_gc_remove_drawable_clip (gc);
- gdk_draw_arc (private->impl, gc, filled,
- x, y,
- width, height, angle1, angle2);
-}
-
static void
gdk_pixmap_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gint y,
gint width,
gint height);
-static void gdk_window_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2);
static void gdk_window_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
drawable_class->create_gc = gdk_window_create_gc;
drawable_class->draw_rectangle = gdk_window_draw_rectangle;
- drawable_class->draw_arc = gdk_window_draw_arc;
drawable_class->draw_polygon = gdk_window_draw_polygon;
drawable_class->draw_drawable_with_src = gdk_window_draw_drawable;
drawable_class->draw_points = gdk_window_draw_points;
END_DRAW;
}
-static void
-gdk_window_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2)
-{
- if (GDK_WINDOW_DESTROYED (drawable))
- return;
-
- BEGIN_DRAW;
- gdk_draw_arc (impl, gc, filled,
- x - x_offset, y - y_offset,
- width, height, angle1, angle2);
- END_DRAW;
-}
-
static void
gdk_window_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gdk_quartz_drawable_release_context (drawable, context);
}
-static void
-gdk_quartz_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2)
-{
- CGContextRef context = gdk_quartz_drawable_get_context (drawable, FALSE);
- float start_angle, end_angle;
- gboolean clockwise = FALSE;
-
- if (!context)
- return;
-
- _gdk_quartz_gc_update_cg_context (gc, drawable, context,
- filled ?
- GDK_QUARTZ_CONTEXT_FILL :
- GDK_QUARTZ_CONTEXT_STROKE);
-
- start_angle = angle1 * 2.0 * G_PI / 360.0 / 64.0;
- end_angle = start_angle + angle2 * 2.0 * G_PI / 360.0 / 64.0;
-
- /* angle2 is relative to angle1 and can be negative, which switches
- * the drawing direction
- */
- if (angle2 < 0)
- clockwise = TRUE;
-
- /* below, flip the coordinate system back to its original y-diretion
- * so the angles passed to CGContextAddArc() are interpreted as
- * expected
- *
- * FIXME: the implementation below works only for perfect circles
- * (width == height). Any other aspect ratio either scales the
- * line width unevenly or scales away the path entirely for very
- * small line widths (esp. for line_width == 0, which is a hair
- * line on X11 but must be approximated with the thinnest possible
- * line on quartz).
- */
-
- if (filled)
- {
- CGContextTranslateCTM (context,
- x + width / 2.0,
- y + height / 2.0);
- CGContextScaleCTM (context, 1.0, - (double)height / (double)width);
-
- CGContextMoveToPoint (context, 0, 0);
- CGContextAddArc (context, 0, 0, width / 2.0,
- start_angle, end_angle,
- clockwise);
- CGContextClosePath (context);
- CGContextFillPath (context);
- }
- else
- {
- CGContextTranslateCTM (context,
- x + width / 2.0 + 0.5,
- y + height / 2.0 + 0.5);
- CGContextScaleCTM (context, 1.0, - (double)height / (double)width);
-
- CGContextAddArc (context, 0, 0, width / 2.0,
- start_angle, end_angle,
- clockwise);
- CGContextStrokePath (context);
- }
-
- gdk_quartz_drawable_release_context (drawable, context);
-}
-
static void
gdk_quartz_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
drawable_class->create_gc = _gdk_quartz_gc_new;
drawable_class->draw_rectangle = gdk_quartz_draw_rectangle;
- drawable_class->draw_arc = gdk_quartz_draw_arc;
drawable_class->draw_polygon = gdk_quartz_draw_polygon;
drawable_class->draw_drawable_with_src = gdk_quartz_draw_drawable;
drawable_class->draw_points = gdk_quartz_draw_points;
gint y,
gint width,
gint height);
-static void gdk_win32_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2);
static void gdk_win32_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
drawable_class->create_gc = _gdk_win32_gc_new;
drawable_class->draw_rectangle = gdk_win32_draw_rectangle;
- drawable_class->draw_arc = gdk_win32_draw_arc;
drawable_class->draw_polygon = gdk_win32_draw_polygon;
drawable_class->draw_drawable_with_src = gdk_win32_draw_drawable;
drawable_class->draw_points = gdk_win32_draw_points;
cairo_region_destroy (region);
}
-static void
-draw_arc (GdkGCWin32 *gcwin32,
- HDC hdc,
- gint x_offset,
- gint y_offset,
- va_list args)
-{
- HGDIOBJ old_pen;
- gboolean filled;
- gint x, y;
- gint width, height;
- gint angle1, angle2;
- int nXStartArc, nYStartArc, nXEndArc, nYEndArc;
-
- filled = va_arg (args, gboolean);
- x = va_arg (args, gint);
- y = va_arg (args, gint);
- width = va_arg (args, gint);
- height = va_arg (args, gint);
- angle1 = va_arg (args, gint);
- angle2 = va_arg (args, gint);
-
- x -= x_offset;
- y -= y_offset;
-
- if (angle2 >= 360*64)
- {
- nXStartArc = nYStartArc = nXEndArc = nYEndArc = 0;
- }
- else if (angle2 > 0)
- {
- nXStartArc = x + width/2 + width * cos(angle1/64.*2.*G_PI/360.);
- nYStartArc = y + height/2 + -height * sin(angle1/64.*2.*G_PI/360.);
- nXEndArc = x + width/2 + width * cos((angle1+angle2)/64.*2.*G_PI/360.);
- nYEndArc = y + height/2 + -height * sin((angle1+angle2)/64.*2.*G_PI/360.);
- }
- else
- {
- nXEndArc = x + width/2 + width * cos(angle1/64.*2.*G_PI/360.);
- nYEndArc = y + height/2 + -height * sin(angle1/64.*2.*G_PI/360.);
- nXStartArc = x + width/2 + width * cos((angle1+angle2)/64.*2.*G_PI/360.);
- nYStartArc = y + height/2 + -height * sin((angle1+angle2)/64.*2.*G_PI/360.);
- }
-
- if (filled)
- {
- old_pen = SelectObject (hdc, GetStockObject (NULL_PEN));
- GDK_NOTE (DRAW, g_print ("... Pie(%p,%d,%d,%d,%d,%d,%d,%d,%d)\n",
- hdc, x, y, x+width, y+height,
- nXStartArc, nYStartArc, nXEndArc, nYEndArc));
- GDI_CALL (Pie, (hdc, x, y, x+width, y+height,
- nXStartArc, nYStartArc, nXEndArc, nYEndArc));
- GDI_CALL (SelectObject, (hdc, old_pen));
- }
- else
- {
- GDK_NOTE (DRAW, g_print ("... Arc(%p,%d,%d,%d,%d,%d,%d,%d,%d)\n",
- hdc, x, y, x+width, y+height,
- nXStartArc, nYStartArc, nXEndArc, nYEndArc));
- GDI_CALL (Arc, (hdc, x, y, x+width, y+height,
- nXStartArc, nYStartArc, nXEndArc, nYEndArc));
- }
-}
-
-static void
-gdk_win32_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2)
-{
- GdkRectangle bounds;
- cairo_region_t *region;
-
- GDK_NOTE (DRAW, g_print ("gdk_win32_draw_arc: %s %d,%d,%d,%d %d %d\n",
- _gdk_win32_drawable_description (drawable),
- x, y, width, height, angle1, angle2));
-
- if (width <= 2 || height <= 2 || angle2 == 0)
- return;
-
- bounds.x = x;
- bounds.y = y;
- bounds.width = width;
- bounds.height = height;
- region = widen_bounds (&bounds, GDK_GC_WIN32 (gc)->pen_width);
-
- generic_draw (drawable, gc,
- GDK_GC_FOREGROUND | (filled ? 0 : LINE_ATTRIBUTES),
- draw_arc, region, filled, x, y, width, height, angle1, angle2);
-
- cairo_region_destroy (region);
-}
-
static void
draw_polygon (GdkGCWin32 *gcwin32,
HDC hdc,
gint y,
gint width,
gint height);
-static void gdk_x11_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2);
static void gdk_x11_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
drawable_class->create_gc = _gdk_x11_gc_new;
drawable_class->draw_rectangle = gdk_x11_draw_rectangle;
- drawable_class->draw_arc = gdk_x11_draw_arc;
drawable_class->draw_polygon = gdk_x11_draw_polygon;
drawable_class->draw_drawable_with_src = gdk_x11_draw_drawable;
drawable_class->draw_points = gdk_x11_draw_points;
GDK_GC_GET_XGC (gc), x, y, width, height);
}
-static void
-gdk_x11_draw_arc (GdkDrawable *drawable,
- GdkGC *gc,
- gboolean filled,
- gint x,
- gint y,
- gint width,
- gint height,
- gint angle1,
- gint angle2)
-{
- GdkDrawableImplX11 *impl;
-
- impl = GDK_DRAWABLE_IMPL_X11 (drawable);
-
-
- if (filled)
- XFillArc (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid,
- GDK_GC_GET_XGC (gc), x, y, width, height, angle1, angle2);
- else
- XDrawArc (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid,
- GDK_GC_GET_XGC (gc), x, y, width, height, angle1, angle2);
-}
-
static void
gdk_x11_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
projects / gtk4.git / commitdiff