bool LockPixels(MCRegionRef p_area, MCGRaster& r_raster)
{
if (m_bitmap == nil || m_locked)
return false;
MCRectangle t_bounds = MCRegionGetBoundingBox(m_region);
MCRectangle t_actual_area;
t_actual_area = MCU_intersect_rect(MCRegionGetBoundingBox(p_area), t_bounds);
if (MCU_empty_rect(t_actual_area))
return false;
/* UNCHECKED */ MCRegionIncludeRect(m_redraw_region, t_actual_area);
uint8_t *t_bits = (uint8_t*)m_raster.pixels + (t_actual_area.y - t_bounds.y) * m_raster.stride + (t_actual_area.x - t_bounds.x) * sizeof(uint32_t);
m_locked_area = t_actual_area;
r_raster . format = kMCGRasterFormat_ARGB;
r_raster . width = t_actual_area . width;
r_raster . height = t_actual_area . height;
r_raster . stride = m_raster.stride;
r_raster . pixels = t_bits;
m_locked = true;
return true;
}
bool MCRegionTransformCallback(void *p_context, const MCRectangle &p_rect)
{
MCRegionTransformContext *t_context;
t_context = static_cast<MCRegionTransformContext*>(p_context);
MCRectangle t_transformed_rect;
t_transformed_rect = MCRectangleGetTransformedBounds(p_rect, t_context->transform);
return MCRegionIncludeRect(t_context->region, t_transformed_rect);
}
bool LockPixels(MCRegionRef p_area, MCGRaster &r_raster)
{
m_locked_bits = m_raster.pixels;
m_locked_stride = m_raster.stride;
m_locked_area = MCRegionGetBoundingBox(p_area);
// restrict locked area to intersection with raster
m_locked_area = MCU_intersect_rect(m_locked_area, MCU_make_rect(0, 0, m_raster.width, m_raster.height));
/* UNCHECKED */ MCRegionIncludeRect(m_redraw_region, m_locked_area);
r_raster.width = m_locked_area.width;
r_raster.height = m_locked_area.height;
r_raster.pixels = (uint8_t *)m_locked_bits + m_locked_area . y * m_locked_stride + m_locked_area . x * sizeof(uint32_t);
r_raster.stride = m_locked_stride;
r_raster.format = m_raster.format;
return true;
}
// IM-2013-10-14: [[ FullscreenMode ]] Move update region tracking into view abstraction
void MCStack::view_dirty_rect(const MCRectangle &p_rect)
{
MCRectangle t_visible_rect = MCRectangleGetTransformedBounds(view_getstackvisiblerect(), view_getviewtransform());
MCRectangle t_dirty_rect = MCU_intersect_rect(p_rect, t_visible_rect);
if (t_dirty_rect.width == 0 || t_dirty_rect.height == 0)
return;
// If there is no region yet, make one.
if (m_view_update_region == nil)
/* UNCHECKED */ MCRegionCreate(m_view_update_region);
MCRegionIncludeRect(m_view_update_region, t_dirty_rect);
// Mark the stack as needing a redraw and schedule an update.
m_view_need_redraw = true;
MCRedrawScheduleUpdateForStack(this);
}
