bool Composite(MCGRectangle p_dst_rect, MCGImageRef p_src, MCGRectangle p_src_rect, MCGFloat p_alpha, MCGBlendMode p_blend)
{
bool t_success = true;
MCGContextRef t_context = nil;
MCRegionRef t_region = nil;
t_success = MCRegionCreate(t_region);
if (t_success)
t_success = MCRegionSetRect(t_region, MCGRectangleGetIntegerBounds(p_dst_rect));
if (t_success)
t_success = LockGraphics(t_region, t_context);
if (t_success)
{
// MW-2013-11-08: [[ Bug ]] Make sure we set the blend/alpha on the context.
MCGContextSetBlendMode(t_context, p_blend);
MCGContextSetOpacity(t_context, p_alpha);
MCGContextDrawRectOfImage(t_context, p_src, p_src_rect, p_dst_rect, kMCGImageFilterNearest);
}
UnlockGraphics();
MCRegionDestroy(t_region);
return t_success;
}
// This is called to render the stack.
void render(MCContext *dc, const MCRectangle& dirty)
{
// Clear the target rectangle
MCGContextRef t_context;
dc->lockgcontext(t_context);
MCGContextSetBlendMode(t_context, kMCGBlendModeClear);
MCGContextAddRectangle(t_context, MCRectangleToMCGRectangle(dirty));
MCGContextFill(t_context);
dc->unlockgcontext(t_context);
// Draw the widget
if (m_widget != nil)
m_widget->draw(dc, dirty, true, false);
}
bool MCWin32ApplyMaskToRasterRegion(MCGRaster &p_raster, uint32_t p_x_origin, uint32_t p_y_origin, const MCGRaster &p_mask, MCRegionRef p_region)
{
// IM-2013-09-11: [[ ResIndependence ]] reduce mask params to single MCGRaster
bool t_success;
t_success = true;
MCGContextRef t_gcontext;
t_gcontext = nil;
if (t_success)
t_success = MCGContextCreateWithRaster(p_raster, t_gcontext);
MCGImageRef t_mask_image;
t_mask_image = nil;
if (t_success)
t_success = MCGImageCreateWithRasterNoCopy(p_mask, t_mask_image);
if (t_success)
{
// IM-2013-09-11: [[ ResIndependence ]] Apply scaled mask to target raster.
// Drawing the mask directly will not work as the effective shape of the drawing operation
// will be defined by the opaque parts of the mask - areas outside will be unaffected. Instead we
// draw a solid rectangle over the intended areas using the mask as a pattern.
MCGFloat t_scale;
t_scale = MCResGetPixelScale();
MCGContextSetFillPattern(t_gcontext, t_mask_image, MCGAffineTransformMakeScale(t_scale, t_scale), kMCGImageFilterNearest);
MCGContextTranslateCTM(t_gcontext, -(MCGFloat)p_x_origin, -(MCGFloat)p_y_origin);
MCGContextSetBlendMode(t_gcontext, kMCGBlendModeDestinationIn);
t_success = MCRegionForEachRect(p_region, __MCApplyMaskCallback, t_gcontext);
}
MCGImageRelease(t_mask_image);
MCGContextRelease(t_gcontext);
return t_success;
}
void MCStack::effectrect(const MCRectangle& p_area, Boolean& r_abort)
{
// Get the list of effects.
MCEffectList *t_effects = MCcur_effects;
MCcur_effects = NULL;
// If the window isn't opened or hasn't been attached (plugin) or if we have no
// snapshot to use, this is a no-op.
if (!opened || !haswindow() || m_snapshot == nil)
{
while(t_effects != NULL)
{
MCEffectList *t_effect;
t_effect = t_effects;
t_effects = t_effects -> next;
delete t_effect;
}
return;
}
// Mark the stack as being in an effect.
state |= CS_EFFECT;
// Lock messages while the effect is happening.
Boolean t_old_lockmessages;
t_old_lockmessages = MClockmessages;
MClockmessages = True;
// Calculate the area of interest.
MCRectangle t_effect_area;
t_effect_area = curcard -> getrect();
t_effect_area . y = getscroll();
t_effect_area . height -= t_effect_area . y;
t_effect_area = MCU_intersect_rect(t_effect_area, p_area);
// IM-2013-08-21: [[ ResIndependence ]] Scale effect area to device coords
// Align snapshot rect to device pixels
// IM-2013-09-30: [[ FullscreenMode ]] Use stack transform to get device coords
MCGAffineTransform t_transform;
t_transform = getdevicetransform();
// MW-2013-10-29: [[ Bug 11330 ]] Make sure the effect area is cropped to the visible
// area.
t_effect_area = MCRectangleGetTransformedBounds(t_effect_area, getviewtransform());
t_effect_area = MCU_intersect_rect(t_effect_area, MCU_make_rect(0, 0, view_getrect() . width, view_getrect() . height));
// IM-2014-01-24: [[ HiDPI ]] scale effect region to backing surface coords
MCGFloat t_scale;
t_scale = view_getbackingscale();
MCRectangle t_device_rect, t_user_rect;
t_device_rect = MCRectangleGetScaledBounds(t_effect_area, t_scale);
t_user_rect = MCRectangleGetTransformedBounds(t_device_rect, MCGAffineTransformInvert(t_transform));
// IM-2013-08-29: [[ RefactorGraphics ]] get device height for CoreImage effects
// IM-2013-09-30: [[ FullscreenMode ]] Use view rect to get device height
uint32_t t_device_height;
t_device_height = floor(view_getrect().height * t_scale);
// Make a region of the effect area
// IM-2013-08-29: [[ ResIndependence ]] scale effect region to device coords
MCRegionRef t_effect_region;
t_effect_region = nil;
/* UNCHECKED */ MCRegionCreate(t_effect_region);
/* UNCHECKED */ MCRegionSetRect(t_effect_region, t_effect_area);
#ifndef FEATURE_PLATFORM_PLAYER
#if defined(FEATURE_QUICKTIME)
// MW-2010-07-07: Make sure QT is only loaded if we actually are doing an effect
if (t_effects != nil)
if (!MCdontuseQTeffects)
if (!MCtemplateplayer -> isQTinitted())
MCtemplateplayer -> initqt();
#endif
#endif
// Lock the screen to prevent any updates occuring until we want them.
MCRedrawLockScreen();
// By default, we have not aborted.
r_abort = False;
MCGImageRef t_initial_image;
t_initial_image = MCGImageRetain(m_snapshot);
while(t_effects != nil)
{
uint32_t t_duration;
t_duration = MCU_max(1, MCeffectrate / (t_effects -> speed - VE_VERY));
if (t_effects -> type == VE_DISSOLVE)
t_duration *= 2;
uint32_t t_delta;
t_delta = 0;
// Create surface at effect_area size.
// Render into surface based on t_effects -> image
MCGImageRef t_final_image = nil;
// If this isn't a plain effect, then we must fetch first and last images.
if (t_effects -> type != VE_PLAIN)
{
// Render the final image.
MCGContextRef t_context = nil;
// IM-2014-05-20: [[ GraphicsPerformance ]] Create opaque context for snapshot
/* UNCHECKED */ MCGContextCreate(t_device_rect.width, t_device_rect.height, false, t_context);
MCGContextTranslateCTM(t_context, -t_device_rect.x, -t_device_rect.y);
// IM-2013-10-03: [[ FullscreenMode ]] Apply device transform to context
MCGContextConcatCTM(t_context, t_transform);
// Configure the context.
MCGContextClipToRect(t_context, MCRectangleToMCGRectangle(t_user_rect));
// Render an appropriate image
switch(t_effects -> image)
{
case VE_INVERSE:
{
MCContext *t_old_context = nil;
/* UNCHECKED */ t_old_context = new MCGraphicsContext(t_context);
curcard->draw(t_old_context, t_user_rect, false);
delete t_old_context;
MCGContextSetFillRGBAColor(t_context, 1.0, 1.0, 1.0, 1.0);
MCGContextSetBlendMode(t_context, kMCGBlendModeDifference);
MCGContextAddRectangle(t_context, MCRectangleToMCGRectangle(t_user_rect));
MCGContextFill(t_context);
}
break;
case VE_BLACK:
MCGContextSetFillRGBAColor(t_context, 0.0, 0.0, 0.0, 1.0);
MCGContextAddRectangle(t_context, MCRectangleToMCGRectangle(t_user_rect));
MCGContextFill(t_context);
break;
case VE_WHITE:
MCGContextSetFillRGBAColor(t_context, 1.0, 1.0, 1.0, 1.0);
MCGContextAddRectangle(t_context, MCRectangleToMCGRectangle(t_user_rect));
MCGContextFill(t_context);
break;
case VE_GRAY:
MCGContextSetFillRGBAColor(t_context, 0.5, 0.5, 0.5, 1.0);
MCGContextAddRectangle(t_context, MCRectangleToMCGRectangle(t_user_rect));
MCGContextFill(t_context);
break;
default:
{
MCContext *t_old_context = nil;
/* UNCHECKED */ t_old_context = new MCGraphicsContext(t_context);
curcard->draw(t_old_context, t_user_rect, false);
delete t_old_context;
}
}
/* UNCHECKED */ MCGContextCopyImage(t_context, t_final_image);
MCGContextRelease(t_context);
}
MCStackEffectContext t_context;
t_context.delta = t_delta;
t_context.duration = t_duration;
t_context.effect = t_effects;
t_context.effect_area = t_device_rect;
t_context.initial_image = t_initial_image;
t_context.final_image = t_final_image;
// MW-2011-10-20: [[ Bug 9824 ]] Make sure dst point is correct.
// Initialize the destination with the start image.
view_platform_updatewindowwithcallback(t_effect_region, MCStackRenderInitial, &t_context);
// If there is a sound, then start playing it.
if (t_effects -> sound != NULL)
{
MCAudioClip *acptr;
MCNewAutoNameRef t_sound;
/* UNCHECKED */ MCNameCreate(t_effects->sound, &t_sound);
if ((acptr = (MCAudioClip *)getobjname(CT_AUDIO_CLIP, *t_sound)) == NULL)
{
IO_handle stream;
if ((stream = MCS_open(t_effects->sound, kMCOpenFileModeRead, True, False, 0)) != NULL)
{
acptr = new MCAudioClip;
acptr->setdisposable();
if (!acptr->import(t_effects->sound, stream))
{
delete acptr;
acptr = NULL;
}
MCS_close(stream);
}
}
if (acptr != NULL)
{
MCU_play_stop();
MCacptr = acptr;
MCU_play();
#ifndef FEATURE_PLATFORM_AUDIO
if (MCacptr != NULL)
MCscreen->addtimer(MCacptr, MCM_internal, PLAY_RATE);
#endif
}
if (MCscreen->wait((real8)MCsyncrate / 1000.0, False, True))
{
r_abort = True;
break;
}
}
// Initialize CoreImage of QTEffects if needed.
if (t_effects -> type != VE_PLAIN)
{
MCAutoPointer<char> t_name;
/* UNCHECKED */ MCStringConvertToCString(t_effects -> name, &t_name);
#ifdef _MAC_DESKTOP
// IM-2013-08-29: [[ ResIndependence ]] use scaled effect rect for CI effects
if (t_effects -> type == VE_UNDEFINED && MCCoreImageEffectBegin(*t_name, t_initial_image, t_final_image, t_device_rect, t_device_height, t_effects -> arguments))
t_effects -> type = VE_CIEFFECT;
else
#endif
#ifdef FEATURE_QUICKTIME_EFFECTS
// IM-2013-08-29: [[ ResIndependence ]] use scaled effect rect for QT effects
if (t_effects -> type == VE_UNDEFINED && MCQTEffectBegin(t_effects -> type, *t_name, t_effects -> direction, t_initial_image, t_final_image, t_device_rect))
t_effects -> type = VE_QTEFFECT;
#else
;
#endif
}
// Run effect
// Now perform the effect loop, but only if there is something to do.
if (t_effects -> type != VE_PLAIN || old_blendlevel != blendlevel)
{
// Calculate timing parameters.
double t_start_time;
t_start_time = 0.0;
for(;;)
{
t_context.delta = t_delta;
Boolean t_drawn = False;
view_platform_updatewindowwithcallback(t_effect_region, MCStackRenderEffect, &t_context);
// Now redraw the window with the new image.
// if (t_drawn)
{
MCscreen -> sync(getw());
}
// Update the window's blendlevel (if needed)
if (old_blendlevel != blendlevel)
{
float t_fraction = float(t_delta) / t_duration;
setopacity(uint1((old_blendlevel * 255 + (float(blendlevel) - old_blendlevel) * 255 * t_fraction) / 100));
}
// If the start time is zero, then start counting from here.
if (t_start_time == 0.0)
t_start_time = MCS_time();
// If we've reached the end of the transition, we are done.
if (t_delta == t_duration)
{
#ifdef _ANDROID_MOBILE
// MW-2011-12-12: [[ Bug 9907 ]] Make sure we let the screen sync at this point
MCscreen -> wait(0.01, False, False);
#endif
break;
}
// Get the time now.
double t_now;
t_now = MCS_time();
// Compute the new delta value.
uint32_t t_new_delta;
t_new_delta = (uint32_t)ceil((t_now - t_start_time) * 1000.0);
// If the new value is same as the old, then advance one step.
if (t_new_delta == t_delta)
t_delta = t_new_delta + 1;
else
t_delta = t_new_delta;
// If the new delta is beyond the end point, set it to the end.
if (t_delta > t_duration)
t_delta = t_duration;
// Wait until the next boundary, making sure we break for no reason
// other than abort.
if (MCscreen -> wait((t_start_time + (t_delta / 1000.0)) - t_now, False, False))
r_abort = True;
// If we aborted, we render the final step and are thus done.
if (r_abort)
t_delta = t_duration;
}
}
#ifdef _MAC_DESKTOP
if (t_effects -> type == VE_CIEFFECT)
MCCoreImageEffectEnd();
else
#endif
#ifdef FEATURE_QUICKTIME_EFFECTS
if (t_effects -> type == VE_QTEFFECT)
MCQTEffectEnd();
#endif
// Free initial surface.
MCGImageRelease(t_initial_image);
// initial surface becomes final surface.
t_initial_image = t_final_image;
t_final_image = nil;
// Move to the next effect.
MCEffectList *t_current_effect;
t_current_effect = t_effects;
t_effects = t_effects -> next;
delete t_current_effect;
}
// Make sure the pixmaps are freed and any dangling effects
// are cleaned up.
if (t_effects != NULL)
{
/* OVERHAUL - REVISIT: error cleanup needs revised */
MCGImageRelease(t_initial_image);
// MCGSurfaceRelease(t_final_image);
while(t_effects != NULL)
{
MCEffectList *t_current_effect;
t_current_effect = t_effects;
t_effects = t_effects -> next;
delete t_current_effect;
}
}
MCRegionDestroy(t_effect_region);
MCGImageRelease(m_snapshot);
m_snapshot = nil;
m_snapshot = t_initial_image;
// Unlock the screen.
MCRedrawUnlockScreen();
// Unlock messages.
MClockmessages = t_old_lockmessages;
// Turn off effect mode.
state &= ~CS_EFFECT;
// The stack's blendlevel is now the new one.
old_blendlevel = blendlevel;
// Finally, mark the affected area of the stack for a redraw.
dirtyrect(p_area);
}