void
_clutter_stage_wayland_repaint_region (ClutterStageWayland *stage_wayland,
ClutterStage *stage)
{
ClutterGeometry geom;
cairo_rectangle_int_t rect;
int i, count;
count = cairo_region_num_rectangles (stage_wayland->repaint_region);
for (i = 0; i < count; i++)
{
cairo_region_get_rectangle (stage_wayland->repaint_region, i, &rect);
cogl_clip_push_window_rectangle (rect.x - 1, rect.y - 1,
rect.width + 2, rect.height + 2);
geom.x = rect.x;
geom.y = rect.y;
geom.width = rect.width;
geom.height = rect.height;
/* FIXME: We should pass geom in as second arg, but some actors
* cull themselves a little to much. Disable for now.*/
_clutter_stage_do_paint (stage, NULL);
cogl_clip_pop ();
}
}
static void
mx_stack_paint_children (ClutterActor *actor)
{
MxStackPrivate *priv = MX_STACK (actor)->priv;
GList *c;
for (c = priv->children; c; c = c->next)
{
ClutterActor *child = c->data;
gboolean crop;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
clutter_container_child_get (CLUTTER_CONTAINER (actor),
child,
"crop", &crop,
NULL);
if (crop)
{
/* clip */
cogl_clip_push_rectangle (priv->allocation.x1,
priv->allocation.y1,
priv->allocation.x2,
priv->allocation.y2);
clutter_actor_paint (c->data);
cogl_clip_pop ();
}
else
clutter_actor_paint (c->data);
}
}
static void
empathy_rounded_effect_paint (ClutterEffect *effect,
ClutterEffectPaintFlags flags)
{
EmpathyRoundedEffect *self = EMPATHY_ROUNDED_EFFECT (effect);
ClutterActor *actor;
ClutterActorBox allocation = { 0, };
gfloat width, height;
actor = clutter_actor_meta_get_actor (CLUTTER_ACTOR_META (self));
clutter_actor_get_allocation_box (actor, &allocation);
clutter_actor_box_get_size (&allocation, &width, &height);
cogl_path_new ();
/* Create and store a path describing a rounded rectangle. The small
* size of the preview window makes the radius of the rounded corners
* very small too, so we can safely use a very coarse angle step
* without loosing rendering accuracy. It also significantly reduces
* the time spent in the underlying internal cogl path functions */
cogl_path_round_rectangle (0, 0, width, height, height / 16., 15);
cogl_clip_push_from_path ();
/* Flip */
cogl_push_matrix ();
cogl_translate (width, 0, 0);
cogl_scale (-1, 1, 1);
clutter_actor_continue_paint (actor);
cogl_pop_matrix ();
cogl_clip_pop ();
}
static void
mex_column_paint (ClutterActor *actor)
{
GList *c;
MxPadding padding;
ClutterActorBox box;
MexColumn *self = MEX_COLUMN (actor);
MexColumnPrivate *priv = self->priv;
CLUTTER_ACTOR_CLASS (mex_column_parent_class)->paint (actor);
mx_widget_get_padding (MX_WIDGET (actor), &padding);
clutter_actor_get_allocation_box (actor, &box);
cogl_clip_push_rectangle (padding.left,
padding.top + priv->adjustment_value,
box.x2 - box.x1 - padding.right,
box.y2 - box.y1 - padding.bottom +
priv->adjustment_value);
for (c = priv->children; c; c = c->next)
{
/* skip the current focus and paint it last*/
if (priv->current_focus != c->data)
clutter_actor_paint (c->data);
}
/* paint the current focused actor last to ensure any shadow is drawn
* on top of other items */
if (priv->current_focus)
clutter_actor_paint (priv->current_focus);
cogl_clip_pop ();
}
static void
mex_column_pick (ClutterActor *actor, const ClutterColor *color)
{
GList *c;
gdouble value;
MxPadding padding;
ClutterActorBox box;
MexColumn *self = MEX_COLUMN (actor);
MexColumnPrivate *priv = self->priv;
CLUTTER_ACTOR_CLASS (mex_column_parent_class)->pick (actor, color);
/* Don't pick children when we don't have focus */
if (!priv->has_focus)
return;
mx_widget_get_padding (MX_WIDGET (actor), &padding);
clutter_actor_get_allocation_box (actor, &box);
if (priv->adjustment)
value = priv->adjustment_value;
else
value = 0;
cogl_clip_push_rectangle (padding.left,
padding.top + value,
box.x2 - box.x1 - padding.right,
box.y2 - box.y1 - padding.bottom + value);
for (c = priv->children; c; c = c->next)
clutter_actor_paint (c->data);
cogl_clip_pop ();
}
static void
mex_content_box_paint (ClutterActor *actor)
{
MexContentBoxPrivate *priv = MEX_CONTENT_BOX (actor)->priv;
gboolean clipped = FALSE;
CLUTTER_ACTOR_CLASS (mex_content_box_parent_class)->paint (actor);
if (G_UNLIKELY (priv->clip_to_allocation))
{
ClutterActorBox box;
clutter_actor_get_allocation_box (actor, &box);
cogl_clip_push_rectangle (0, 0, box.x2 - box.x1, box.y2 - box.y1);
clipped = TRUE;
}
clutter_actor_paint (priv->tile);
if (G_UNLIKELY (priv->extras_visible))
{
ClutterActorBox box;
clutter_actor_paint (priv->action_list);
clutter_actor_paint (priv->info_panel);
/* separator */
cogl_set_source_color4ub (255, 255, 255, 51);
clutter_actor_get_allocation_box (priv->info_panel, &box);
cogl_path_line (box.x1, box.y1, box.x2, box.y1);
cogl_path_stroke ();
}
if (G_UNLIKELY (clipped))
cogl_clip_pop ();
}
static void
st_box_layout_paint (ClutterActor *actor)
{
StBoxLayout *self = ST_BOX_LAYOUT (actor);
StBoxLayoutPrivate *priv = self->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
GList *l, *children;
gdouble x, y;
ClutterActorBox allocation_box;
ClutterActorBox content_box;
get_border_paint_offsets (self, &x, &y);
if (x != 0 || y != 0)
{
cogl_push_matrix ();
cogl_translate ((int)x, (int)y, 0);
}
CLUTTER_ACTOR_CLASS (st_box_layout_parent_class)->paint (actor);
if (x != 0 || y != 0)
{
cogl_pop_matrix ();
}
children = st_container_get_children_list (ST_CONTAINER (actor));
if (children == NULL)
return;
clutter_actor_get_allocation_box (actor, &allocation_box);
st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);
content_box.x1 += x;
content_box.y1 += y;
content_box.x2 += x;
content_box.y2 += y;
/* The content area forms the viewport into the scrolled contents, while
* the borders and background stay in place; after drawing the borders and
* background, we clip to the content area */
if (priv->hadjustment || priv->vadjustment)
cogl_clip_push_rectangle ((int)content_box.x1,
(int)content_box.y1,
(int)content_box.x2,
(int)content_box.y2);
for (l = children; l; l = g_list_next (l))
{
ClutterActor *child = (ClutterActor*) l->data;
if (CLUTTER_ACTOR_IS_VISIBLE (child))
clutter_actor_paint (child);
}
if (priv->hadjustment || priv->vadjustment)
cogl_clip_pop ();
}
static void
st_box_layout_paint (ClutterActor *actor)
{
StBoxLayout *self = ST_BOX_LAYOUT (actor);
StBoxLayoutPrivate *priv = self->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
gdouble x, y;
ClutterActorBox allocation_box;
ClutterActorBox content_box;
ClutterActor *child;
get_border_paint_offsets (self, &x, &y);
if (x != 0 || y != 0)
{
cogl_push_matrix ();
cogl_translate ((int)x, (int)y, 0);
}
st_widget_paint_background (ST_WIDGET (actor));
if (x != 0 || y != 0)
{
cogl_pop_matrix ();
}
if (clutter_actor_get_n_children (actor) == 0)
return;
clutter_actor_get_allocation_box (actor, &allocation_box);
st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);
content_box.x1 += x;
content_box.y1 += y;
content_box.x2 += x;
content_box.y2 += y;
/* The content area forms the viewport into the scrolled contents, while
* the borders and background stay in place; after drawing the borders and
* background, we clip to the content area */
if (priv->hadjustment || priv->vadjustment)
cogl_clip_push_rectangle ((int)content_box.x1,
(int)content_box.y1,
(int)content_box.x2,
(int)content_box.y2);
for (child = clutter_actor_get_first_child (actor);
child != NULL;
child = clutter_actor_get_next_sibling (child))
clutter_actor_paint (child);
if (priv->hadjustment || priv->vadjustment)
cogl_clip_pop ();
}
static void
st_box_layout_pick (ClutterActor *actor,
const ClutterColor *color)
{
StBoxLayout *self = ST_BOX_LAYOUT (actor);
StBoxLayoutPrivate *priv = self->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
gdouble x, y;
ClutterActorBox allocation_box;
ClutterActorBox content_box;
ClutterActor *child;
get_border_paint_offsets (self, &x, &y);
if (x != 0 || y != 0)
{
cogl_push_matrix ();
cogl_translate ((int)x, (int)y, 0);
}
CLUTTER_ACTOR_CLASS (st_box_layout_parent_class)->pick (actor, color);
if (x != 0 || y != 0)
{
cogl_pop_matrix ();
}
if (clutter_actor_get_n_children (actor) == 0)
return;
clutter_actor_get_allocation_box (actor, &allocation_box);
st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);
content_box.x1 += x;
content_box.y1 += y;
content_box.x2 += x;
content_box.y2 += y;
if (priv->hadjustment || priv->vadjustment)
cogl_clip_push_rectangle ((int)content_box.x1,
(int)content_box.y1,
(int)content_box.x2,
(int)content_box.y2);
for (child = clutter_actor_get_first_child (actor);
child != NULL;
child = clutter_actor_get_next_sibling (child))
clutter_actor_paint (child);
if (priv->hadjustment || priv->vadjustment)
cogl_clip_pop ();
}
static void
mex_grid_view_paint (ClutterActor *actor)
{
MexGridViewPrivate *priv = MEX_GRID_VIEW (actor)->priv;
ClutterActorBox gbox, mbox;
CLUTTER_ACTOR_CLASS (mex_grid_view_parent_class)->paint (actor);
clutter_actor_get_allocation_box (priv->menu_layout, &mbox);
clutter_actor_get_allocation_box (priv->grid_layout, &gbox);
cogl_clip_push_rectangle (mbox.x2, mbox.y1, gbox.x2, gbox.y2);
clutter_actor_paint (priv->grid_layout);
cogl_clip_pop ();
clutter_actor_paint (priv->menu_layout);
}
static void
shell_slicer_paint_child (ShellSlicer *self)
{
ClutterActor *child;
ClutterActorBox self_box;
ClutterActorBox child_box;
float width, height, child_width, child_height;
StAlign x_align, y_align;
double x_align_factor, y_align_factor;
child = st_bin_get_child (ST_BIN (self));
if (!child)
return;
st_bin_get_alignment (ST_BIN (self), &x_align, &y_align);
_st_get_align_factors (x_align, y_align,
&x_align_factor, &y_align_factor);
clutter_actor_get_allocation_box (CLUTTER_ACTOR (self), &self_box);
clutter_actor_get_allocation_box (child, &child_box);
width = self_box.x2 - self_box.x1;
height = self_box.y2 - self_box.y1;
child_width = child_box.x2 - child_box.x1;
child_height = child_box.y2 - child_box.y1;
cogl_push_matrix ();
cogl_clip_push_rectangle (0, 0, width, height);
cogl_translate ((int)(0.5 + x_align_factor * (width - child_width)),
(int)(0.5 + y_align_factor * (height - child_height)),
0);
clutter_actor_paint (child);
cogl_clip_pop ();
cogl_pop_matrix ();
}
static void
empathy_rounded_actor_paint (ClutterActor *actor)
{
EmpathyRoundedActor *self = EMPATHY_ROUNDED_ACTOR (actor);
ClutterActorBox allocation = { 0, };
gfloat width, height;
clutter_actor_get_allocation_box (actor, &allocation);
clutter_actor_box_get_size (&allocation, &width, &height);
cogl_path_new ();
/* create and store a path describing a rounded rectangle */
cogl_path_round_rectangle (0, 0, width, height,
height / self->priv->round_factor, 0.1);
cogl_clip_push_from_path ();
CLUTTER_ACTOR_CLASS (empathy_rounded_actor_parent_class)->paint (actor);
cogl_clip_pop ();
}
static void
clutter_stage_glx_redraw (ClutterStageWindow *stage_window)
{
ClutterBackendX11 *backend_x11;
ClutterBackendGLX *backend_glx;
ClutterStageX11 *stage_x11;
ClutterStageGLX *stage_glx;
GLXDrawable drawable;
unsigned int video_sync_count;
gboolean may_use_clipped_redraw;
gboolean use_clipped_redraw;
CLUTTER_STATIC_TIMER (painting_timer,
"Redrawing", /* parent */
"Painting actors",
"The time spent painting actors",
0 /* no application private data */);
CLUTTER_STATIC_TIMER (swapbuffers_timer,
"Redrawing", /* parent */
"glXSwapBuffers",
"The time spent blocked by glXSwapBuffers",
0 /* no application private data */);
CLUTTER_STATIC_TIMER (blit_sub_buffer_timer,
"Redrawing", /* parent */
"glx_blit_sub_buffer",
"The time spent in _glx_blit_sub_buffer",
0 /* no application private data */);
stage_x11 = CLUTTER_STAGE_X11 (stage_window);
if (stage_x11->xwin == None)
return;
stage_glx = CLUTTER_STAGE_GLX (stage_window);
backend_x11 = stage_x11->backend;
backend_glx = CLUTTER_BACKEND_GLX (backend_x11);
CLUTTER_TIMER_START (_clutter_uprof_context, painting_timer);
if (G_LIKELY (backend_glx->can_blit_sub_buffer) &&
/* NB: a zero width redraw clip == full stage redraw */
stage_glx->bounding_redraw_clip.width != 0 &&
/* some drivers struggle to get going and produce some junk
* frames when starting up... */
G_LIKELY (stage_glx->frame_count > 3) &&
/* While resizing a window clipped redraws are disabled to avoid
* artefacts. See clutter-event-x11.c:event_translate for a
* detailed explanation */
G_LIKELY (stage_x11->clipped_redraws_cool_off == 0))
{
may_use_clipped_redraw = TRUE;
}
else
may_use_clipped_redraw = FALSE;
if (may_use_clipped_redraw &&
G_LIKELY (!(clutter_paint_debug_flags &
CLUTTER_DEBUG_DISABLE_CLIPPED_REDRAWS)))
use_clipped_redraw = TRUE;
else
use_clipped_redraw = FALSE;
if (use_clipped_redraw)
{
CLUTTER_NOTE (CLIPPING,
"Stage clip pushed: x=%d, y=%d, width=%d, height=%d\n",
stage_glx->bounding_redraw_clip.x,
stage_glx->bounding_redraw_clip.y,
stage_glx->bounding_redraw_clip.width,
stage_glx->bounding_redraw_clip.height);
cogl_clip_push_window_rectangle (stage_glx->bounding_redraw_clip.x,
stage_glx->bounding_redraw_clip.y,
stage_glx->bounding_redraw_clip.width,
stage_glx->bounding_redraw_clip.height);
_clutter_stage_do_paint (stage_x11->wrapper,
&stage_glx->bounding_redraw_clip);
cogl_clip_pop ();
}
else
{
CLUTTER_NOTE (CLIPPING, "Unclipped stage paint\n");
_clutter_stage_do_paint (stage_x11->wrapper, NULL);
}
if (may_use_clipped_redraw &&
G_UNLIKELY ((clutter_paint_debug_flags & CLUTTER_DEBUG_REDRAWS)))
{
static CoglMaterial *outline = NULL;
ClutterGeometry *clip = &stage_glx->bounding_redraw_clip;
ClutterActor *actor = CLUTTER_ACTOR (stage_x11->wrapper);
CoglHandle vbo;
float x_1 = clip->x;
float x_2 = clip->x + clip->width;
float y_1 = clip->y;
float y_2 = clip->y + clip->height;
float quad[8] = {
x_1, y_1,
x_2, y_1,
x_2, y_2,
x_1, y_2
};
CoglMatrix modelview;
if (outline == NULL)
{
outline = cogl_material_new ();
cogl_material_set_color4ub (outline, 0xff, 0x00, 0x00, 0xff);
}
vbo = cogl_vertex_buffer_new (4);
cogl_vertex_buffer_add (vbo,
"gl_Vertex",
2, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT,
FALSE, /* normalized */
0, /* stride */
quad);
cogl_vertex_buffer_submit (vbo);
cogl_push_matrix ();
cogl_matrix_init_identity (&modelview);
_clutter_actor_apply_modelview_transform (actor, &modelview);
cogl_set_modelview_matrix (&modelview);
cogl_set_source (outline);
cogl_vertex_buffer_draw (vbo, COGL_VERTICES_MODE_LINE_LOOP,
0 , 4);
cogl_pop_matrix ();
cogl_object_unref (vbo);
}
cogl_flush ();
CLUTTER_TIMER_STOP (_clutter_uprof_context, painting_timer);
drawable = stage_glx->glxwin
? stage_glx->glxwin
: stage_x11->xwin;
/* If we might ever use _clutter_backend_glx_blit_sub_buffer then we
* always need to keep track of the video_sync_count so that we can
* throttle blits.
*
* Note: we get the count *before* we issue any glXCopySubBuffer or
* blit_sub_buffer request in case the count would go up before
* returning control to us.
*/
if (backend_glx->can_blit_sub_buffer && backend_glx->get_video_sync)
backend_glx->get_video_sync (&video_sync_count);
/* push on the screen */
if (use_clipped_redraw)
{
ClutterGeometry *clip = &stage_glx->bounding_redraw_clip;
ClutterGeometry copy_area;
ClutterActor *actor;
CLUTTER_NOTE (BACKEND,
"_glx_blit_sub_buffer (window: 0x%lx, "
"x: %d, y: %d, "
"width: %d, height: %d)",
(unsigned long) drawable,
stage_glx->bounding_redraw_clip.x,
stage_glx->bounding_redraw_clip.y,
stage_glx->bounding_redraw_clip.width,
stage_glx->bounding_redraw_clip.height);
/* XXX: It seems there will be a race here in that the stage
* window may be resized before glXCopySubBufferMESA is handled
* and so we may copy the wrong region. I can't really see how
* we can handle this with the current state of X but at least
* in this case a full redraw should be queued by the resize
* anyway so it should only exhibit temporary artefacts.
*/
actor = CLUTTER_ACTOR (stage_x11->wrapper);
copy_area.y = clutter_actor_get_height (actor)
- clip->y
- clip->height;
copy_area.x = clip->x;
copy_area.width = clip->width;
copy_area.height = clip->height;
/* glXCopySubBufferMESA and glBlitFramebuffer are not integrated
* with the glXSwapIntervalSGI mechanism which we usually use to
* throttle the Clutter framerate to the vertical refresh and so
* we have to manually wait for the vblank period...
*/
/* Here 'is_synchronized' only means that the blit won't cause a
* tear, ie it won't prevent multiple blits per retrace if they
* can all be performed in the blanking period. If that's the
* case then we still want to use the vblank sync menchanism but
* we only need it to throttle redraws.
*/
if (!backend_glx->blit_sub_buffer_is_synchronized)
{
/* XXX: note that glXCopySubBuffer, at least for Intel, is
* synchronized with the vblank but glBlitFramebuffer may
* not be so we use the same scheme we do when calling
* glXSwapBuffers without the swap_control extension and
* call glFinish () before waiting for the vblank period.
*
* See where we call glXSwapBuffers for more details.
*/
glFinish ();
wait_for_vblank (backend_glx);
}
else if (backend_glx->get_video_sync)
{
/* If we have the GLX_SGI_video_sync extension then we can
* be a bit smarter about how we throttle blits by avoiding
* any waits if we can see that the video sync count has
* already progressed. */
if (backend_glx->last_video_sync_count == video_sync_count)
wait_for_vblank (backend_glx);
}
else
wait_for_vblank (backend_glx);
CLUTTER_TIMER_START (_clutter_uprof_context, blit_sub_buffer_timer);
_clutter_backend_glx_blit_sub_buffer (backend_glx,
drawable,
copy_area.x,
copy_area.y,
copy_area.width,
copy_area.height);
CLUTTER_TIMER_STOP (_clutter_uprof_context, blit_sub_buffer_timer);
}
else
{
CLUTTER_NOTE (BACKEND, "glXSwapBuffers (display: %p, window: 0x%lx)",
backend_x11->xdpy,
(unsigned long) drawable);
/* If we have GLX swap buffer events then glXSwapBuffers will return
* immediately and we need to track that there is a swap in
* progress... */
if (clutter_feature_available (CLUTTER_FEATURE_SWAP_EVENTS))
stage_glx->pending_swaps++;
if (backend_glx->vblank_type != CLUTTER_VBLANK_GLX_SWAP &&
backend_glx->vblank_type != CLUTTER_VBLANK_NONE)
{
/* If we are going to wait for VBLANK manually, we not only
* need to flush out pending drawing to the GPU before we
* sleep, we need to wait for it to finish. Otherwise, we
* may end up with the situation:
*
* - We finish drawing - GPU drawing continues
* - We go to sleep - GPU drawing continues
* VBLANK - We call glXSwapBuffers - GPU drawing continues
* - GPU drawing continues
* - Swap buffers happens
*
* Producing a tear. Calling glFinish() first will cause us
* to properly wait for the next VBLANK before we swap. This
* obviously does not happen when we use _GLX_SWAP and let
* the driver do the right thing
*/
glFinish ();
wait_for_vblank (backend_glx);
}
CLUTTER_TIMER_START (_clutter_uprof_context, swapbuffers_timer);
glXSwapBuffers (backend_x11->xdpy, drawable);
CLUTTER_TIMER_STOP (_clutter_uprof_context, swapbuffers_timer);
_cogl_swap_buffers_notify ();
}
backend_glx->last_video_sync_count = video_sync_count;
/* reset the redraw clipping for the next paint... */
stage_glx->initialized_redraw_clip = FALSE;
stage_glx->frame_count++;
}
static void
on_paint (ClutterActor *actor, void *state)
{
float saved_viewport[4];
CoglMatrix saved_projection;
CoglMatrix projection;
CoglMatrix modelview;
guchar *data;
CoglHandle tex;
CoglHandle offscreen;
CoglColor black;
float x0;
float y0;
float width;
float height;
/* for clearing the offscreen framebuffer to black... */
cogl_color_init_from_4ub (&black, 0x00, 0x00, 0x00, 0xff);
cogl_get_viewport (saved_viewport);
cogl_get_projection_matrix (&saved_projection);
cogl_push_matrix ();
cogl_matrix_init_identity (&projection);
cogl_matrix_init_identity (&modelview);
cogl_set_projection_matrix (&projection);
cogl_set_modelview_matrix (&modelview);
/* - Create a 100x200 viewport (i.e. smaller than the onscreen framebuffer)
* and position it a (20, 10) inside the framebuffer.
* - Fill the whole viewport with a purple rectangle
* - Verify that the framebuffer is black with a 100x200 purple rectangle at
* (20, 10)
*/
cogl_set_viewport (20, /* x */
10, /* y */
100, /* width */
200); /* height */
/* clear everything... */
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
/* fill the viewport with purple.. */
cogl_set_source_color4ub (0xff, 0x00, 0xff, 0xff);
cogl_rectangle (-1, 1, 1, -1);
assert_rectangle_color_and_black_border (20, 10, 100, 200,
0xff, 0x00, 0xff);
/* - Create a viewport twice the size of the onscreen framebuffer with
* a negative offset positioning it at (-20, -10) relative to the
* buffer itself.
* - Draw a 100x200 green rectangle at (40, 20) within the viewport (which
* is (20, 10) within the framebuffer)
* - Verify that the framebuffer is black with a 100x200 green rectangle at
* (20, 10)
*/
cogl_set_viewport (-20, /* x */
-10, /* y */
FRAMEBUFFER_WIDTH * 2, /* width */
FRAMEBUFFER_HEIGHT * 2); /* height */
/* clear everything... */
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
/* draw a 100x200 green rectangle offset into the viewport such that its
* top left corner should be found at (20, 10) in the offscreen buffer */
/* (offset 40 pixels right from the left of the viewport) */
x0 = -1.0f + (1.0f / FRAMEBUFFER_WIDTH) * 40.f;
/* (offset 20 pixels down from the top of the viewport) */
y0 = 1.0f - (1.0f / FRAMEBUFFER_HEIGHT) * 20.0f;
width = (1.0f / FRAMEBUFFER_WIDTH) * 100;
height = (1.0f / FRAMEBUFFER_HEIGHT) * 200;
cogl_set_source_color4ub (0x00, 0xff, 0x00, 0xff);
cogl_rectangle (x0, y0, x0 + width, y0 - height);
assert_rectangle_color_and_black_border (20, 10, 100, 200,
0x00, 0xff, 0x00);
/* - Create a 200x400 viewport and position it a (20, 10) inside the draw
* buffer.
* - Push a 100x200 window space clip rectangle at (20, 10)
* - Fill the whole viewport with a blue rectangle
* - Verify that the framebuffer is black with a 100x200 blue rectangle at
* (20, 10)
*/
cogl_set_viewport (20, /* x */
10, /* y */
200, /* width */
400); /* height */
/* clear everything... */
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
cogl_clip_push_window_rectangle (20, 10, 100, 200);
/* fill the viewport with blue.. */
cogl_set_source_color4ub (0x00, 0x00, 0xff, 0xff);
cogl_rectangle (-1, 1, 1, -1);
cogl_clip_pop ();
assert_rectangle_color_and_black_border (20, 10, 100, 200,
0x00, 0x00, 0xff);
/* - Create a 200x400 viewport and position it a (20, 10) inside the draw
* buffer.
* - Push a 100x200 model space clip rectangle at (20, 10) in the viewport
* (i.e. (40, 20) inside the framebuffer)
* - Fill the whole viewport with a green rectangle
* - Verify that the framebuffer is black with a 100x200 green rectangle at
* (40, 20)
*/
cogl_set_viewport (20, /* x */
10, /* y */
200, /* width */
400); /* height */
/* clear everything... */
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
/* figure out where to position our clip rectangle in model space
* coordinates... */
/* (offset 40 pixels right from the left of the viewport) */
x0 = -1.0f + (2.0f / 200) * 20.f;
/* (offset 20 pixels down from the top of the viewport) */
y0 = 1.0f - (2.0f / 400) * 10.0f;
width = (2.0f / 200) * 100;
height = (2.0f / 400) * 200;
/* add the clip rectangle... */
cogl_push_matrix ();
cogl_translate (x0 + (width/2.0), y0 - (height/2.0), 0);
/* XXX: Rotate just enough to stop Cogl from converting our model space
* rectangle into a window space rectangle.. */
cogl_rotate (0.1, 0, 0, 1);
cogl_clip_push_rectangle (-(width/2.0), -(height/2.0),
width/2.0, height/2.0);
cogl_pop_matrix ();
/* fill the viewport with green.. */
cogl_set_source_color4ub (0x00, 0xff, 0x00, 0xff);
cogl_rectangle (-1, 1, 1, -1);
cogl_clip_pop ();
assert_rectangle_color_and_black_border (40, 20, 100, 200,
0x00, 0xff, 0x00);
/* Set the viewport to something specific so we can verify that it gets
* restored after we are done testing with an offscreen framebuffer... */
cogl_set_viewport (20, 10, 100, 200);
/*
* Next test offscreen drawing...
*/
data = g_malloc (FRAMEBUFFER_WIDTH * 4 * FRAMEBUFFER_HEIGHT);
tex = cogl_texture_new_from_data (FRAMEBUFFER_WIDTH, FRAMEBUFFER_HEIGHT,
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_RGBA_8888, /* data fmt */
COGL_PIXEL_FORMAT_ANY, /* internal fmt */
FRAMEBUFFER_WIDTH * 4, /* rowstride */
data);
g_free (data);
offscreen = cogl_offscreen_new_to_texture (tex);
cogl_push_framebuffer (offscreen);
/* - Create a 100x200 viewport (i.e. smaller than the offscreen framebuffer)
* and position it a (20, 10) inside the framebuffer.
* - Fill the whole viewport with a blue rectangle
* - Verify that the framebuffer is black with a 100x200 blue rectangle at
* (20, 10)
*/
cogl_set_viewport (20, /* x */
10, /* y */
100, /* width */
200); /* height */
/* clear everything... */
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
/* fill the viewport with blue.. */
cogl_set_source_color4ub (0x00, 0x00, 0xff, 0xff);
cogl_rectangle (-1, 1, 1, -1);
assert_rectangle_color_and_black_border (20, 10, 100, 200,
0x00, 0x00, 0xff);
/* - Create a viewport twice the size of the offscreen framebuffer with
* a negative offset positioning it at (-20, -10) relative to the
* buffer itself.
* - Draw a 100x200 red rectangle at (40, 20) within the viewport (which
* is (20, 10) within the framebuffer)
* - Verify that the framebuffer is black with a 100x200 red rectangle at
* (20, 10)
*/
cogl_set_viewport (-20, /* x */
-10, /* y */
FRAMEBUFFER_WIDTH * 2, /* width */
FRAMEBUFFER_HEIGHT * 2); /* height */
/* clear everything... */
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
/* draw a 100x200 red rectangle offset into the viewport such that its
* top left corner should be found at (20, 10) in the offscreen buffer */
/* (offset 40 pixels right from the left of the viewport) */
x0 = -1.0f + (1.0f / FRAMEBUFFER_WIDTH) * 40.f;
/* (offset 20 pixels down from the top of the viewport) */
y0 = 1.0f - (1.0f / FRAMEBUFFER_HEIGHT) * 20.0f;
width = (1.0f / FRAMEBUFFER_WIDTH) * 100;
height = (1.0f / FRAMEBUFFER_HEIGHT) * 200;
cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff);
cogl_rectangle (x0, y0, x0 + width, y0 - height);
assert_rectangle_color_and_black_border (20, 10, 100, 200,
0xff, 0x00, 0x00);
/* - Create a 200x400 viewport and position it a (20, 10) inside the draw
* buffer.
* - Push a 100x200 window space clip rectangle at (20, 10)
* - Fill the whole viewport with a blue rectangle
* - Verify that the framebuffer is black with a 100x200 blue rectangle at
* (20, 10)
*/
cogl_set_viewport (20, /* x */
10, /* y */
200, /* width */
400); /* height */
/* clear everything... */
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
cogl_clip_push_window_rectangle (20, 10, 100, 200);
/* fill the viewport with blue.. */
cogl_set_source_color4ub (0x00, 0x00, 0xff, 0xff);
cogl_rectangle (-1, 1, 1, -1);
cogl_clip_pop ();
assert_rectangle_color_and_black_border (20, 10, 100, 200,
0x00, 0x00, 0xff);
/* - Create a 200x400 viewport and position it a (20, 10) inside the draw
* buffer.
* - Push a 100x200 model space clip rectangle at (20, 10) in the viewport
* (i.e. (40, 20) inside the framebuffer)
* - Fill the whole viewport with a green rectangle
* - Verify that the framebuffer is black with a 100x200 green rectangle at
* (40, 20)
*/
cogl_set_viewport (20, /* x */
10, /* y */
200, /* width */
400); /* height */
/* clear everything... */
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
/* figure out where to position our clip rectangle in model space
* coordinates... */
/* (offset 40 pixels right from the left of the viewport) */
x0 = -1.0f + (2.0f / 200) * 20.f;
/* (offset 20 pixels down from the top of the viewport) */
y0 = 1.0f - (2.0f / 400) * 10.0f;
width = (2.0f / 200) * 100;
height = (2.0f / 400) * 200;
/* add the clip rectangle... */
cogl_push_matrix ();
cogl_translate (x0 + (width/2.0), y0 - (height/2.0), 0);
/* XXX: Rotate just enough to stop Cogl from converting our model space
* rectangle into a window space rectangle.. */
cogl_rotate (0.1, 0, 0, 1);
cogl_clip_push_rectangle (-(width/2.0), -(height/2.0),
width/2, height/2);
cogl_pop_matrix ();
/* fill the viewport with green.. */
cogl_set_source_color4ub (0x00, 0xff, 0x00, 0xff);
cogl_rectangle (-1, 1, 1, -1);
cogl_clip_pop ();
assert_rectangle_color_and_black_border (40, 20, 100, 200,
0x00, 0xff, 0x00);
/* Set the viewport to something obscure to verify that it gets
* replace when we switch back to the onscreen framebuffer... */
cogl_set_viewport (0, 0, 10, 10);
cogl_pop_framebuffer ();
cogl_handle_unref (offscreen);
/*
* Verify that the previous onscreen framebuffer's viewport was restored
* by drawing a white rectangle across the whole viewport. This should
* draw a 100x200 rectangle at (20,10) relative to the onscreen draw
* buffer...
*/
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
cogl_set_source_color4ub (0xff, 0xff, 0xff, 0xff);
cogl_rectangle (-1, 1, 1, -1);
assert_rectangle_color_and_black_border (20, 10, 100, 200,
0xff, 0xff, 0xff);
/* Uncomment to display the last contents of the offscreen framebuffer */
#if 1
cogl_matrix_init_identity (&projection);
cogl_matrix_init_identity (&modelview);
cogl_set_viewport (0, 0, FRAMEBUFFER_WIDTH, FRAMEBUFFER_HEIGHT);
cogl_set_projection_matrix (&projection);
cogl_set_modelview_matrix (&modelview);
cogl_set_source_texture (tex);
cogl_rectangle (-1, 1, 1, -1);
#endif
cogl_handle_unref (tex);
/* Finally restore the stage's original state... */
cogl_pop_matrix ();
cogl_set_projection_matrix (&saved_projection);
cogl_set_viewport (saved_viewport[0], saved_viewport[1],
saved_viewport[2], saved_viewport[3]);
/* Comment this out if you want visual feedback of what this test
* paints.
*/
clutter_main_quit ();
}
static void
mnb_fancy_bin_paint (ClutterActor *actor)
{
MnbFancyBin *self = MNB_FANCY_BIN (actor);
MnbFancyBinPrivate *priv = self->priv;
/* Draw the clipped child if necessary */
if (priv->fanciness > 0.0)
{
MxPadding padding;
gfloat width, height;
clutter_actor_get_size (actor, &width, &height);
mx_widget_get_padding (MX_WIDGET (actor), &padding);
/* Create a clip path so that the clone won't poke out
* from underneath the background.
*/
cogl_path_new ();
cogl_path_move_to (padding.left + priv->curve_radius,
padding.top);
cogl_path_arc (width - padding.right - priv->curve_radius,
priv->curve_radius + padding.top,
priv->curve_radius,
priv->curve_radius,
270,
360);
cogl_path_arc (width - padding.right - priv->curve_radius,
height - padding.bottom - priv->curve_radius,
priv->curve_radius,
priv->curve_radius,
0,
90);
cogl_path_arc (padding.left + priv->curve_radius,
height - padding.bottom - priv->curve_radius,
priv->curve_radius,
priv->curve_radius,
90,
180);
cogl_path_arc (padding.left + priv->curve_radius,
padding.top + priv->curve_radius,
priv->curve_radius,
priv->curve_radius,
180,
270);
cogl_path_close ();
cogl_clip_push_from_path ();
/* Paint child */
if (priv->child)
clutter_actor_paint (priv->child);
cogl_clip_pop ();
/* Chain up for background */
CLUTTER_ACTOR_CLASS (mnb_fancy_bin_parent_class)->paint (actor);
}
/* Draw the un-fancy child */
if ((priv->fanciness < 1.0) && priv->clone)
clutter_actor_paint (priv->clone);
}
static void
post_paint_clip_cb (void)
{
cogl_clip_pop ();
}