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gecko-dev/dom/plugins/ipc/PluginInterposeOSX.mm

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// vim:set ts=2 sts=2 sw=2 et cin:
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "base/basictypes.h"
#include "nsCocoaUtils.h"
#include "PluginModuleChild.h"
#include "nsDebug.h"
#include "PluginInterposeOSX.h"
#include <set>
#import <AppKit/AppKit.h>
#import <objc/runtime.h>
#import <Carbon/Carbon.h>
using namespace mozilla::plugins;
namespace mac_plugin_interposing {
int32_t NSCursorInfo::mNativeCursorsSupported = -1;
// This constructor may be called from the browser process or the plugin
// process.
NSCursorInfo::NSCursorInfo()
: mType(TypeArrow)
, mHotSpot(nsPoint(0, 0))
, mCustomImageData(NULL)
, mCustomImageDataLength(0)
{
}
NSCursorInfo::NSCursorInfo(NSCursor* aCursor)
: mType(TypeArrow)
, mHotSpot(nsPoint(0, 0))
, mCustomImageData(NULL)
, mCustomImageDataLength(0)
{
// This constructor is only ever called from the plugin process, so the
// following is safe.
if (!GetNativeCursorsSupported()) {
return;
}
NSPoint hotSpotCocoa = [aCursor hotSpot];
mHotSpot = nsPoint(hotSpotCocoa.x, hotSpotCocoa.y);
Class nsCursorClass = [NSCursor class];
if ([aCursor isEqual:[NSCursor arrowCursor]]) {
mType = TypeArrow;
} else if ([aCursor isEqual:[NSCursor closedHandCursor]]) {
mType = TypeClosedHand;
} else if ([aCursor isEqual:[NSCursor crosshairCursor]]) {
mType = TypeCrosshair;
} else if ([aCursor isEqual:[NSCursor disappearingItemCursor]]) {
mType = TypeDisappearingItem;
} else if ([aCursor isEqual:[NSCursor IBeamCursor]]) {
mType = TypeIBeam;
} else if ([aCursor isEqual:[NSCursor openHandCursor]]) {
mType = TypeOpenHand;
} else if ([aCursor isEqual:[NSCursor pointingHandCursor]]) {
mType = TypePointingHand;
} else if ([aCursor isEqual:[NSCursor resizeDownCursor]]) {
mType = TypeResizeDown;
} else if ([aCursor isEqual:[NSCursor resizeLeftCursor]]) {
mType = TypeResizeLeft;
} else if ([aCursor isEqual:[NSCursor resizeLeftRightCursor]]) {
mType = TypeResizeLeftRight;
} else if ([aCursor isEqual:[NSCursor resizeRightCursor]]) {
mType = TypeResizeRight;
} else if ([aCursor isEqual:[NSCursor resizeUpCursor]]) {
mType = TypeResizeUp;
} else if ([aCursor isEqual:[NSCursor resizeUpDownCursor]]) {
mType = TypeResizeUpDown;
// The following cursor types are only supported on OS X 10.6 and up.
} else if ([nsCursorClass respondsToSelector:@selector(contextualMenuCursor)] &&
[aCursor isEqual:[nsCursorClass performSelector:@selector(contextualMenuCursor)]]) {
mType = TypeContextualMenu;
} else if ([nsCursorClass respondsToSelector:@selector(dragCopyCursor)] &&
[aCursor isEqual:[nsCursorClass performSelector:@selector(dragCopyCursor)]]) {
mType = TypeDragCopy;
} else if ([nsCursorClass respondsToSelector:@selector(dragLinkCursor)] &&
[aCursor isEqual:[nsCursorClass performSelector:@selector(dragLinkCursor)]]) {
mType = TypeDragLink;
} else if ([nsCursorClass respondsToSelector:@selector(operationNotAllowedCursor)] &&
[aCursor isEqual:[nsCursorClass performSelector:@selector(operationNotAllowedCursor)]]) {
mType = TypeNotAllowed;
} else {
NSImage* image = [aCursor image];
NSArray* reps = image ? [image representations] : nil;
NSUInteger repsCount = reps ? [reps count] : 0;
if (!repsCount) {
// If we have a custom cursor with no image representations, assume we
// need a transparent cursor.
mType = TypeTransparent;
} else {
CGImageRef cgImage = nil;
// XXX We don't know how to deal with a cursor that doesn't have a
// bitmap image representation. For now we fall back to an arrow
// cursor.
for (NSUInteger i = 0; i < repsCount; ++i) {
id rep = [reps objectAtIndex:i];
if ([rep isKindOfClass:[NSBitmapImageRep class]]) {
cgImage = [(NSBitmapImageRep*)rep CGImage];
break;
}
}
if (cgImage) {
CFMutableDataRef data = ::CFDataCreateMutable(kCFAllocatorDefault, 0);
if (data) {
CGImageDestinationRef dest = ::CGImageDestinationCreateWithData(data,
kUTTypePNG,
1,
NULL);
if (dest) {
::CGImageDestinationAddImage(dest, cgImage, NULL);
if (::CGImageDestinationFinalize(dest)) {
uint32_t dataLength = (uint32_t) ::CFDataGetLength(data);
mCustomImageData = (uint8_t*) moz_xmalloc(dataLength);
::CFDataGetBytes(data, ::CFRangeMake(0, dataLength), mCustomImageData);
mCustomImageDataLength = dataLength;
mType = TypeCustom;
}
::CFRelease(dest);
}
::CFRelease(data);
}
}
if (!mCustomImageData) {
mType = TypeArrow;
}
}
}
}
NSCursorInfo::NSCursorInfo(const Cursor* aCursor)
: mType(TypeArrow)
, mHotSpot(nsPoint(0, 0))
, mCustomImageData(NULL)
, mCustomImageDataLength(0)
{
// This constructor is only ever called from the plugin process, so the
// following is safe.
if (!GetNativeCursorsSupported()) {
return;
}
mHotSpot = nsPoint(aCursor->hotSpot.h, aCursor->hotSpot.v);
int width = 16, height = 16;
int bytesPerPixel = 4;
int rowBytes = width * bytesPerPixel;
int bitmapSize = height * rowBytes;
bool isTransparent = true;
uint8_t* bitmap = (uint8_t*) moz_xmalloc(bitmapSize);
// The way we create 'bitmap' is largely "borrowed" from Chrome's
// WebCursor::InitFromCursor().
for (int y = 0; y < height; ++y) {
unsigned short data = aCursor->data[y];
unsigned short mask = aCursor->mask[y];
// Change 'data' and 'mask' from big-endian to little-endian, but output
// big-endian data below.
data = ((data << 8) & 0xFF00) | ((data >> 8) & 0x00FF);
mask = ((mask << 8) & 0xFF00) | ((mask >> 8) & 0x00FF);
// It'd be nice to use a gray-scale bitmap. But
// CGBitmapContextCreateImage() (used below) won't work with one that also
// has alpha values.
for (int x = 0; x < width; ++x) {
int offset = (y * rowBytes) + (x * bytesPerPixel);
// Color value
if (data & 0x8000) {
bitmap[offset] = 0x0;
bitmap[offset + 1] = 0x0;
bitmap[offset + 2] = 0x0;
} else {
bitmap[offset] = 0xFF;
bitmap[offset + 1] = 0xFF;
bitmap[offset + 2] = 0xFF;
}
// Mask value
if (mask & 0x8000) {
bitmap[offset + 3] = 0xFF;
isTransparent = false;
} else {
bitmap[offset + 3] = 0x0;
}
data <<= 1;
mask <<= 1;
}
}
if (isTransparent) {
// If aCursor is transparent, we don't need to serialize custom cursor
// data over IPC.
mType = TypeTransparent;
} else {
CGColorSpaceRef color = ::CGColorSpaceCreateDeviceRGB();
if (color) {
CGContextRef context =
::CGBitmapContextCreate(bitmap,
width,
height,
8,
rowBytes,
color,
kCGImageAlphaPremultipliedLast |
kCGBitmapByteOrder32Big);
if (context) {
CGImageRef image = ::CGBitmapContextCreateImage(context);
if (image) {
::CFMutableDataRef data = ::CFDataCreateMutable(kCFAllocatorDefault, 0);
if (data) {
CGImageDestinationRef dest =
::CGImageDestinationCreateWithData(data,
kUTTypePNG,
1,
NULL);
if (dest) {
::CGImageDestinationAddImage(dest, image, NULL);
if (::CGImageDestinationFinalize(dest)) {
uint32_t dataLength = (uint32_t) ::CFDataGetLength(data);
mCustomImageData = (uint8_t*) moz_xmalloc(dataLength);
::CFDataGetBytes(data,
::CFRangeMake(0, dataLength),
mCustomImageData);
mCustomImageDataLength = dataLength;
mType = TypeCustom;
}
::CFRelease(dest);
}
::CFRelease(data);
}
::CGImageRelease(image);
}
::CGContextRelease(context);
}
::CGColorSpaceRelease(color);
}
}
free(bitmap);
}
NSCursorInfo::~NSCursorInfo()
{
if (mCustomImageData) {
free(mCustomImageData);
}
}
NSCursor* NSCursorInfo::GetNSCursor() const
{
NSCursor* retval = nil;
Class nsCursorClass = [NSCursor class];
switch(mType) {
case TypeArrow:
retval = [NSCursor arrowCursor];
break;
case TypeClosedHand:
retval = [NSCursor closedHandCursor];
break;
case TypeCrosshair:
retval = [NSCursor crosshairCursor];
break;
case TypeDisappearingItem:
retval = [NSCursor disappearingItemCursor];
break;
case TypeIBeam:
retval = [NSCursor IBeamCursor];
break;
case TypeOpenHand:
retval = [NSCursor openHandCursor];
break;
case TypePointingHand:
retval = [NSCursor pointingHandCursor];
break;
case TypeResizeDown:
retval = [NSCursor resizeDownCursor];
break;
case TypeResizeLeft:
retval = [NSCursor resizeLeftCursor];
break;
case TypeResizeLeftRight:
retval = [NSCursor resizeLeftRightCursor];
break;
case TypeResizeRight:
retval = [NSCursor resizeRightCursor];
break;
case TypeResizeUp:
retval = [NSCursor resizeUpCursor];
break;
case TypeResizeUpDown:
retval = [NSCursor resizeUpDownCursor];
break;
// The following four cursor types are only supported on OS X 10.6 and up.
case TypeContextualMenu: {
if ([nsCursorClass respondsToSelector:@selector(contextualMenuCursor)]) {
retval = [nsCursorClass performSelector:@selector(contextualMenuCursor)];
}
break;
}
case TypeDragCopy: {
if ([nsCursorClass respondsToSelector:@selector(dragCopyCursor)]) {
retval = [nsCursorClass performSelector:@selector(dragCopyCursor)];
}
break;
}
case TypeDragLink: {
if ([nsCursorClass respondsToSelector:@selector(dragLinkCursor)]) {
retval = [nsCursorClass performSelector:@selector(dragLinkCursor)];
}
break;
}
case TypeNotAllowed: {
if ([nsCursorClass respondsToSelector:@selector(operationNotAllowedCursor)]) {
retval = [nsCursorClass performSelector:@selector(operationNotAllowedCursor)];
}
break;
}
case TypeTransparent:
retval = GetTransparentCursor();
break;
default:
break;
}
if (!retval && mCustomImageData && mCustomImageDataLength) {
CGDataProviderRef provider = ::CGDataProviderCreateWithData(NULL,
(const void*)mCustomImageData,
mCustomImageDataLength,
NULL);
if (provider) {
CGImageRef cgImage = ::CGImageCreateWithPNGDataProvider(provider,
NULL,
false,
kCGRenderingIntentDefault);
if (cgImage) {
NSBitmapImageRep* rep = [[NSBitmapImageRep alloc] initWithCGImage:cgImage];
if (rep) {
NSImage* image = [[NSImage alloc] init];
if (image) {
[image addRepresentation:rep];
retval = [[[NSCursor alloc] initWithImage:image
hotSpot:NSMakePoint(mHotSpot.x, mHotSpot.y)]
autorelease];
[image release];
}
[rep release];
}
::CGImageRelease(cgImage);
}
::CFRelease(provider);
}
}
// Fall back to an arrow cursor if need be.
if (!retval) {
retval = [NSCursor arrowCursor];
}
return retval;
}
// Get a transparent cursor with the appropriate hot spot. We need one if
// (for example) we have a custom cursor with no image data.
NSCursor* NSCursorInfo::GetTransparentCursor() const
{
NSCursor* retval = nil;
int width = 16, height = 16;
int bytesPerPixel = 2;
int rowBytes = width * bytesPerPixel;
int dataSize = height * rowBytes;
uint8_t* data = (uint8_t*) moz_xmalloc(dataSize);
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x) {
int offset = (y * rowBytes) + (x * bytesPerPixel);
data[offset] = 0x7E; // Arbitrary gray-scale value
data[offset + 1] = 0; // Alpha value to make us transparent
}
}
NSBitmapImageRep* imageRep =
[[[NSBitmapImageRep alloc] initWithBitmapDataPlanes:nil
pixelsWide:width
pixelsHigh:height
bitsPerSample:8
samplesPerPixel:2
hasAlpha:YES
isPlanar:NO
colorSpaceName:NSCalibratedWhiteColorSpace
bytesPerRow:rowBytes
bitsPerPixel:16]
autorelease];
if (imageRep) {
uint8_t* repDataPtr = [imageRep bitmapData];
if (repDataPtr) {
memcpy(repDataPtr, data, dataSize);
NSImage *image =
[[[NSImage alloc] initWithSize:NSMakeSize(width, height)]
autorelease];
if (image) {
[image addRepresentation:imageRep];
retval =
[[[NSCursor alloc] initWithImage:image
hotSpot:NSMakePoint(mHotSpot.x, mHotSpot.y)]
autorelease];
}
}
}
free(data);
// Fall back to an arrow cursor if (for some reason) the above code failed.
if (!retval) {
retval = [NSCursor arrowCursor];
}
return retval;
}
NSCursorInfo::Type NSCursorInfo::GetType() const
{
return mType;
}
const char* NSCursorInfo::GetTypeName() const
{
switch(mType) {
case TypeCustom:
return "TypeCustom";
case TypeArrow:
return "TypeArrow";
case TypeClosedHand:
return "TypeClosedHand";
case TypeContextualMenu:
return "TypeContextualMenu";
case TypeCrosshair:
return "TypeCrosshair";
case TypeDisappearingItem:
return "TypeDisappearingItem";
case TypeDragCopy:
return "TypeDragCopy";
case TypeDragLink:
return "TypeDragLink";
case TypeIBeam:
return "TypeIBeam";
case TypeNotAllowed:
return "TypeNotAllowed";
case TypeOpenHand:
return "TypeOpenHand";
case TypePointingHand:
return "TypePointingHand";
case TypeResizeDown:
return "TypeResizeDown";
case TypeResizeLeft:
return "TypeResizeLeft";
case TypeResizeLeftRight:
return "TypeResizeLeftRight";
case TypeResizeRight:
return "TypeResizeRight";
case TypeResizeUp:
return "TypeResizeUp";
case TypeResizeUpDown:
return "TypeResizeUpDown";
case TypeTransparent:
return "TypeTransparent";
default:
break;
}
return "TypeUnknown";
}
nsPoint NSCursorInfo::GetHotSpot() const
{
return mHotSpot;
}
uint8_t* NSCursorInfo::GetCustomImageData() const
{
return mCustomImageData;
}
uint32_t NSCursorInfo::GetCustomImageDataLength() const
{
return mCustomImageDataLength;
}
void NSCursorInfo::SetType(Type aType)
{
mType = aType;
}
void NSCursorInfo::SetHotSpot(nsPoint aHotSpot)
{
mHotSpot = aHotSpot;
}
void NSCursorInfo::SetCustomImageData(uint8_t* aData, uint32_t aDataLength)
{
if (mCustomImageData) {
free(mCustomImageData);
}
if (aDataLength) {
mCustomImageData = (uint8_t*) moz_xmalloc(aDataLength);
memcpy(mCustomImageData, aData, aDataLength);
} else {
mCustomImageData = NULL;
}
mCustomImageDataLength = aDataLength;
}
// This should never be called from the browser process -- only from the
// plugin process.
bool NSCursorInfo::GetNativeCursorsSupported()
{
if (mNativeCursorsSupported == -1) {
ENSURE_PLUGIN_THREAD(false);
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
bool result = pmc->GetNativeCursorsSupported();
if (result) {
mNativeCursorsSupported = 1;
} else {
mNativeCursorsSupported = 0;
}
}
}
return (mNativeCursorsSupported == 1);
}
} // namespace mac_plugin_interposing
namespace mac_plugin_interposing {
namespace parent {
// Tracks plugin windows currently visible.
std::set<uint32_t> plugin_visible_windows_set_;
// Tracks full screen windows currently visible.
std::set<uint32_t> plugin_fullscreen_windows_set_;
// Tracks modal windows currently visible.
std::set<uint32_t> plugin_modal_windows_set_;
void OnPluginShowWindow(uint32_t window_id,
CGRect window_bounds,
bool modal) {
plugin_visible_windows_set_.insert(window_id);
if (modal)
plugin_modal_windows_set_.insert(window_id);
CGRect main_display_bounds = ::CGDisplayBounds(CGMainDisplayID());
if (CGRectEqualToRect(window_bounds, main_display_bounds) &&
(plugin_fullscreen_windows_set_.find(window_id) ==
plugin_fullscreen_windows_set_.end())) {
plugin_fullscreen_windows_set_.insert(window_id);
nsCocoaUtils::HideOSChromeOnScreen(TRUE, [[NSScreen screens] objectAtIndex:0]);
}
}
static void ActivateProcess(pid_t pid) {
ProcessSerialNumber process;
OSStatus status = ::GetProcessForPID(pid, &process);
if (status == noErr) {
SetFrontProcess(&process);
} else {
NS_WARNING("Unable to get process for pid.");
}
}
// Must be called on the UI thread.
// If plugin_pid is -1, the browser will be the active process on return,
// otherwise that process will be given focus back before this function returns.
static void ReleasePluginFullScreen(pid_t plugin_pid) {
// Releasing full screen only works if we are the frontmost process; grab
// focus, but give it back to the plugin process if requested.
ActivateProcess(base::GetCurrentProcId());
nsCocoaUtils::HideOSChromeOnScreen(FALSE, [[NSScreen screens] objectAtIndex:0]);
if (plugin_pid != -1) {
ActivateProcess(plugin_pid);
}
}
void OnPluginHideWindow(uint32_t window_id, pid_t aPluginPid) {
bool had_windows = !plugin_visible_windows_set_.empty();
plugin_visible_windows_set_.erase(window_id);
bool browser_needs_activation = had_windows &&
plugin_visible_windows_set_.empty();
plugin_modal_windows_set_.erase(window_id);
if (plugin_fullscreen_windows_set_.find(window_id) !=
plugin_fullscreen_windows_set_.end()) {
plugin_fullscreen_windows_set_.erase(window_id);
pid_t plugin_pid = browser_needs_activation ? -1 : aPluginPid;
browser_needs_activation = false;
ReleasePluginFullScreen(plugin_pid);
}
if (browser_needs_activation) {
ActivateProcess(getpid());
}
}
void OnSetCursor(const NSCursorInfo& cursorInfo)
{
NSCursor* aCursor = cursorInfo.GetNSCursor();
if (aCursor) {
[aCursor set];
}
}
void OnShowCursor(bool show)
{
if (show) {
[NSCursor unhide];
} else {
[NSCursor hide];
}
}
void OnPushCursor(const NSCursorInfo& cursorInfo)
{
NSCursor* aCursor = cursorInfo.GetNSCursor();
if (aCursor) {
[aCursor push];
}
}
void OnPopCursor()
{
[NSCursor pop];
}
} // parent
} // namespace mac_plugin_interposing
namespace mac_plugin_interposing {
namespace child {
// TODO(stuartmorgan): Make this an IPC to order the plugin process above the
// browser process only if the browser is current frontmost.
void FocusPluginProcess() {
ProcessSerialNumber this_process, front_process;
if ((GetCurrentProcess(&this_process) != noErr) ||
(GetFrontProcess(&front_process) != noErr)) {
return;
}
Boolean matched = false;
if ((SameProcess(&this_process, &front_process, &matched) == noErr) &&
!matched) {
SetFrontProcess(&this_process);
}
}
void NotifyBrowserOfPluginShowWindow(uint32_t window_id, CGRect bounds,
bool modal) {
ENSURE_PLUGIN_THREAD_VOID();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc)
pmc->PluginShowWindow(window_id, modal, bounds);
}
void NotifyBrowserOfPluginHideWindow(uint32_t window_id, CGRect bounds) {
ENSURE_PLUGIN_THREAD_VOID();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc)
pmc->PluginHideWindow(window_id);
}
void NotifyBrowserOfSetCursor(NSCursorInfo& aCursorInfo)
{
ENSURE_PLUGIN_THREAD_VOID();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
pmc->SetCursor(aCursorInfo);
}
}
void NotifyBrowserOfShowCursor(bool show)
{
ENSURE_PLUGIN_THREAD_VOID();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
pmc->ShowCursor(show);
}
}
void NotifyBrowserOfPushCursor(NSCursorInfo& aCursorInfo)
{
ENSURE_PLUGIN_THREAD_VOID();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
pmc->PushCursor(aCursorInfo);
}
}
void NotifyBrowserOfPopCursor()
{
ENSURE_PLUGIN_THREAD_VOID();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
pmc->PopCursor();
}
}
struct WindowInfo {
uint32_t window_id;
CGRect bounds;
explicit WindowInfo(NSWindow* aWindow) {
NSInteger window_num = [aWindow windowNumber];
window_id = window_num > 0 ? window_num : 0;
bounds = NSRectToCGRect([aWindow frame]);
}
};
static void OnPluginWindowClosed(const WindowInfo& window_info) {
if (window_info.window_id == 0)
return;
mac_plugin_interposing::child::NotifyBrowserOfPluginHideWindow(window_info.window_id,
window_info.bounds);
}
static void OnPluginWindowShown(const WindowInfo& window_info, BOOL is_modal) {
// The window id is 0 if it has never been shown (including while it is the
// process of being shown for the first time); when that happens, we'll catch
// it in _setWindowNumber instead.
static BOOL s_pending_display_is_modal = NO;
if (window_info.window_id == 0) {
if (is_modal)
s_pending_display_is_modal = YES;
return;
}
if (s_pending_display_is_modal) {
is_modal = YES;
s_pending_display_is_modal = NO;
}
mac_plugin_interposing::child::NotifyBrowserOfPluginShowWindow(
window_info.window_id, window_info.bounds, is_modal);
}
static BOOL OnSetCursor(NSCursorInfo &aInfo)
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfSetCursor(aInfo);
return YES;
}
return NO;
}
static BOOL OnHideCursor()
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfShowCursor(NO);
return YES;
}
return NO;
}
static BOOL OnUnhideCursor()
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfShowCursor(YES);
return YES;
}
return NO;
}
static BOOL OnPushCursor(NSCursorInfo &aInfo)
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfPushCursor(aInfo);
return YES;
}
return NO;
}
static BOOL OnPopCursor()
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfPopCursor();
return YES;
}
return NO;
}
} // child
} // namespace mac_plugin_interposing
using namespace mac_plugin_interposing::child;
@interface NSWindow (PluginInterposing)
- (void)pluginInterpose_orderOut:(id)sender;
- (void)pluginInterpose_orderFront:(id)sender;
- (void)pluginInterpose_makeKeyAndOrderFront:(id)sender;
- (void)pluginInterpose_setWindowNumber:(NSInteger)num;
@end
@implementation NSWindow (PluginInterposing)
- (void)pluginInterpose_orderOut:(id)sender {
WindowInfo window_info(self);
[self pluginInterpose_orderOut:sender];
OnPluginWindowClosed(window_info);
}
- (void)pluginInterpose_orderFront:(id)sender {
mac_plugin_interposing::child::FocusPluginProcess();
[self pluginInterpose_orderFront:sender];
OnPluginWindowShown(WindowInfo(self), NO);
}
- (void)pluginInterpose_makeKeyAndOrderFront:(id)sender {
mac_plugin_interposing::child::FocusPluginProcess();
[self pluginInterpose_makeKeyAndOrderFront:sender];
OnPluginWindowShown(WindowInfo(self), NO);
}
- (void)pluginInterpose_setWindowNumber:(NSInteger)num {
if (num > 0)
mac_plugin_interposing::child::FocusPluginProcess();
[self pluginInterpose_setWindowNumber:num];
if (num > 0)
OnPluginWindowShown(WindowInfo(self), NO);
}
@end
@interface NSApplication (PluginInterposing)
- (NSInteger)pluginInterpose_runModalForWindow:(NSWindow*)window;
@end
@implementation NSApplication (PluginInterposing)
- (NSInteger)pluginInterpose_runModalForWindow:(NSWindow*)window {
mac_plugin_interposing::child::FocusPluginProcess();
// This is out-of-order relative to the other calls, but runModalForWindow:
// won't return until the window closes, and the order only matters for
// full-screen windows.
OnPluginWindowShown(WindowInfo(window), YES);
return [self pluginInterpose_runModalForWindow:window];
}
@end
// Hook commands to manipulate the current cursor, so that they can be passed
// from the child process to the parent process. These commands have no
// effect unless they're performed in the parent process.
@interface NSCursor (PluginInterposing)
- (void)pluginInterpose_set;
- (void)pluginInterpose_push;
- (void)pluginInterpose_pop;
+ (NSCursor*)pluginInterpose_currentCursor;
+ (void)pluginInterpose_hide;
+ (void)pluginInterpose_unhide;
+ (void)pluginInterpose_pop;
@end
// Cache the results of [NSCursor set], [NSCursor push] and [NSCursor pop].
// The last element is always the current cursor.
static NSMutableArray* gCursorStack = nil;
static BOOL initCursorStack()
{
if (!gCursorStack) {
gCursorStack = [[NSMutableArray arrayWithCapacity:5] retain];
}
return (gCursorStack != NULL);
}
static NSCursor* currentCursorFromCache()
{
if (!initCursorStack())
return nil;
return (NSCursor*) [gCursorStack lastObject];
}
static void setCursorInCache(NSCursor* aCursor)
{
if (!initCursorStack() || !aCursor)
return;
NSUInteger count = [gCursorStack count];
if (count) {
[gCursorStack replaceObjectAtIndex:count - 1 withObject:aCursor];
} else {
[gCursorStack addObject:aCursor];
}
}
static void pushCursorInCache(NSCursor* aCursor)
{
if (!initCursorStack() || !aCursor)
return;
[gCursorStack addObject:aCursor];
}
static void popCursorInCache()
{
if (!initCursorStack())
return;
// Apple's doc on the +[NSCursor pop] method says: "If the current cursor
// is the only cursor on the stack, this method does nothing."
if ([gCursorStack count] > 1) {
[gCursorStack removeLastObject];
}
}
@implementation NSCursor (PluginInterposing)
- (void)pluginInterpose_set
{
NSCursorInfo info(self);
OnSetCursor(info);
setCursorInCache(self);
[self pluginInterpose_set];
}
- (void)pluginInterpose_push
{
NSCursorInfo info(self);
OnPushCursor(info);
pushCursorInCache(self);
[self pluginInterpose_push];
}
- (void)pluginInterpose_pop
{
OnPopCursor();
popCursorInCache();
[self pluginInterpose_pop];
}
// The currentCursor method always returns nil when running in a background
// process. But this may confuse plugins (notably Flash, see bug 621117). So
// if we get a nil return from the "call to super", we return a cursor that's
// been cached by previous calls to set or push. According to Apple's docs,
// currentCursor "only returns the cursor set by your application using
// NSCursor methods". So we don't need to worry about changes to the cursor
// made by other methods like SetThemeCursor().
+ (NSCursor*)pluginInterpose_currentCursor
{
NSCursor* retval = [self pluginInterpose_currentCursor];
if (!retval) {
retval = currentCursorFromCache();
}
return retval;
}
+ (void)pluginInterpose_hide
{
OnHideCursor();
[self pluginInterpose_hide];
}
+ (void)pluginInterpose_unhide
{
OnUnhideCursor();
[self pluginInterpose_unhide];
}
+ (void)pluginInterpose_pop
{
OnPopCursor();
popCursorInCache();
[self pluginInterpose_pop];
}
@end
static void ExchangeMethods(Class target_class,
BOOL class_method,
SEL original,
SEL replacement) {
Method m1;
Method m2;
if (class_method) {
m1 = class_getClassMethod(target_class, original);
m2 = class_getClassMethod(target_class, replacement);
} else {
m1 = class_getInstanceMethod(target_class, original);
m2 = class_getInstanceMethod(target_class, replacement);
}
if (m1 == m2)
return;
if (m1 && m2)
method_exchangeImplementations(m1, m2);
else
NS_NOTREACHED("Cocoa swizzling failed");
}
namespace mac_plugin_interposing {
namespace child {
void SetUpCocoaInterposing() {
Class nswindow_class = [NSWindow class];
ExchangeMethods(nswindow_class, NO, @selector(orderOut:),
@selector(pluginInterpose_orderOut:));
ExchangeMethods(nswindow_class, NO, @selector(orderFront:),
@selector(pluginInterpose_orderFront:));
ExchangeMethods(nswindow_class, NO, @selector(makeKeyAndOrderFront:),
@selector(pluginInterpose_makeKeyAndOrderFront:));
ExchangeMethods(nswindow_class, NO, @selector(_setWindowNumber:),
@selector(pluginInterpose_setWindowNumber:));
ExchangeMethods([NSApplication class], NO, @selector(runModalForWindow:),
@selector(pluginInterpose_runModalForWindow:));
Class nscursor_class = [NSCursor class];
ExchangeMethods(nscursor_class, NO, @selector(set),
@selector(pluginInterpose_set));
ExchangeMethods(nscursor_class, NO, @selector(push),
@selector(pluginInterpose_push));
ExchangeMethods(nscursor_class, NO, @selector(pop),
@selector(pluginInterpose_pop));
ExchangeMethods(nscursor_class, YES, @selector(currentCursor),
@selector(pluginInterpose_currentCursor));
ExchangeMethods(nscursor_class, YES, @selector(hide),
@selector(pluginInterpose_hide));
ExchangeMethods(nscursor_class, YES, @selector(unhide),
@selector(pluginInterpose_unhide));
ExchangeMethods(nscursor_class, YES, @selector(pop),
@selector(pluginInterpose_pop));
}
} // namespace child
} // namespace mac_plugin_interposing
// Called from plugin_child_interpose.mm, which hooks calls to
// SetCursor() (the QuickDraw call) from the plugin child process.
extern "C" NS_VISIBILITY_DEFAULT BOOL
mac_plugin_interposing_child_OnSetCursor(const Cursor* cursor)
{
NSCursorInfo info(cursor);
return OnSetCursor(info);
}
// Called from plugin_child_interpose.mm, which hooks calls to
// SetThemeCursor() (the Appearance Manager call) from the plugin child
// process.
extern "C" NS_VISIBILITY_DEFAULT BOOL
mac_plugin_interposing_child_OnSetThemeCursor(ThemeCursor cursor)
{
NSCursorInfo info;
switch (cursor) {
case kThemeArrowCursor:
info.SetType(NSCursorInfo::TypeArrow);
break;
case kThemeCopyArrowCursor:
info.SetType(NSCursorInfo::TypeDragCopy);
break;
case kThemeAliasArrowCursor:
info.SetType(NSCursorInfo::TypeDragLink);
break;
case kThemeContextualMenuArrowCursor:
info.SetType(NSCursorInfo::TypeContextualMenu);
break;
case kThemeIBeamCursor:
info.SetType(NSCursorInfo::TypeIBeam);
break;
case kThemeCrossCursor:
case kThemePlusCursor:
info.SetType(NSCursorInfo::TypeCrosshair);
break;
case kThemeWatchCursor:
case kThemeSpinningCursor:
info.SetType(NSCursorInfo::TypeArrow);
break;
case kThemeClosedHandCursor:
info.SetType(NSCursorInfo::TypeClosedHand);
break;
case kThemeOpenHandCursor:
info.SetType(NSCursorInfo::TypeOpenHand);
break;
case kThemePointingHandCursor:
case kThemeCountingUpHandCursor:
case kThemeCountingDownHandCursor:
case kThemeCountingUpAndDownHandCursor:
info.SetType(NSCursorInfo::TypePointingHand);
break;
case kThemeResizeLeftCursor:
info.SetType(NSCursorInfo::TypeResizeLeft);
break;
case kThemeResizeRightCursor:
info.SetType(NSCursorInfo::TypeResizeRight);
break;
case kThemeResizeLeftRightCursor:
info.SetType(NSCursorInfo::TypeResizeLeftRight);
break;
case kThemeNotAllowedCursor:
info.SetType(NSCursorInfo::TypeNotAllowed);
break;
case kThemeResizeUpCursor:
info.SetType(NSCursorInfo::TypeResizeUp);
break;
case kThemeResizeDownCursor:
info.SetType(NSCursorInfo::TypeResizeDown);
break;
case kThemeResizeUpDownCursor:
info.SetType(NSCursorInfo::TypeResizeUpDown);
break;
case kThemePoofCursor:
info.SetType(NSCursorInfo::TypeDisappearingItem);
break;
default:
info.SetType(NSCursorInfo::TypeArrow);
break;
}
return OnSetCursor(info);
}
extern "C" NS_VISIBILITY_DEFAULT BOOL
mac_plugin_interposing_child_OnHideCursor()
{
return OnHideCursor();
}
extern "C" NS_VISIBILITY_DEFAULT BOOL
mac_plugin_interposing_child_OnShowCursor()
{
return OnUnhideCursor();
}
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