static void rtgui_dc_client_blit_line (struct rtgui_dc* self, int x1, int x2, int y, rt_uint8_t* line_data)
{
register rt_base_t index;
rtgui_widget_t *owner;
if (self == RT_NULL) return;
/* get owner */
owner = RTGUI_CONTAINER_OF(self, struct rtgui_widget, dc_type);
if (!RTGUI_WIDGET_IS_DC_VISIBLE(owner)) return;
/* convert logic to device */
x1 = x1 + owner->extent.x1;
x2 = x2 + owner->extent.x1;
if (x1 > x2) _int_swap(x1, x2);
y = y + owner->extent.y1;
if (rtgui_region_is_flat(&(owner->clip)) == RT_EOK)
{
rtgui_rect_t* prect;
int offset = 0;
prect = &(owner->clip.extents);
/* calculate vline intersect */
if (prect->y1 > y || prect->y2 <= y ) return;
if (prect->x2 <= x1 || prect->x1 > x2) return;
if (prect->x1 > x1) x1 = prect->x1;
if (prect->x2 < x2) x2 = prect->x2;
/* patch note:
* We need to adjust the offset when update widget clip!
* Of course at ordinary times for 0. General */
offset = owner->clip.extents.x1 - owner->extent.x1;
offset = offset * hw_driver->bits_per_pixel/8;
/* draw hline */
hw_driver->ops->draw_raw_hline(line_data+offset, x1, x2, y);
}
else for (index = 0; index < rtgui_region_num_rects(&(owner->clip)); index ++)
{
rtgui_rect_t* prect;
register rt_base_t draw_x1, draw_x2;
prect = ((rtgui_rect_t *)(owner->clip.data + index + 1));
draw_x1 = x1;
draw_x2 = x2;
/* calculate hline clip */
if (prect->y1 > y || prect->y2 <= y ) continue;
if (prect->x2 <= x1 || prect->x1 > x2) continue;
if (prect->x1 > x1) draw_x1 = prect->x1;
if (prect->x2 < x2) draw_x2 = prect->x2;
/* draw hline */
hw_driver->ops->draw_raw_hline(line_data + (draw_x1 - x1) * hw_driver->bits_per_pixel/8, draw_x1, draw_x2, y);
}
}
struct rtgui_dc* rtgui_dc_begin_drawing(rtgui_widget_t* owner)
{
RT_ASSERT(owner != RT_NULL);
if ((rtgui_region_is_flat(&owner->clip) == RT_EOK) &&
rtgui_rect_is_equal(&(owner->extent), &(owner->clip.extents)) == RT_EOK) {
/* use hardware DC */
return rtgui_dc_hw_create(owner);
}
return rtgui_dc_client_create(owner);
}
struct rtgui_dc* rtgui_dc_begin_drawing(rtgui_widget_t* owner)
{
struct rtgui_dc* dc;
RT_ASSERT(owner != RT_NULL);
rtgui_screen_lock(RT_WAITING_FOREVER);
if ((rtgui_region_is_flat(&owner->clip) == RT_EOK) &&
rtgui_rect_is_equal(&(owner->extent), &(owner->clip.extents)) == RT_EOK)
dc = rtgui_dc_hw_create(owner);
else
dc = rtgui_dc_client_create(owner);
if (dc == RT_NULL) rtgui_screen_unlock();
return dc;
}