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-rw-r--r--widget/cocoa/nsCursorManager.mm317
1 files changed, 317 insertions, 0 deletions
diff --git a/widget/cocoa/nsCursorManager.mm b/widget/cocoa/nsCursorManager.mm
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+++ b/widget/cocoa/nsCursorManager.mm
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "imgIContainer.h"
+#include "nsCocoaUtils.h"
+#include "nsCursorManager.h"
+#include "nsObjCExceptions.h"
+#include <math.h>
+
+static nsCursorManager* gInstance;
+static CGFloat sCurrentCursorScaleFactor = 0.0f;
+static nsIWidget::Cursor sCurrentCursor;
+static constexpr nsCursor kCustomCursor = eCursorCount;
+
+/*! @category nsCursorManager(PrivateMethods)
+ Private methods for the cursor manager class.
+*/
+@interface nsCursorManager (PrivateMethods)
+/*! @method getCursor:
+ @abstract Get a reference to the native Mac representation of a cursor.
+ @discussion Gets a reference to the Mac native implementation of a cursor.
+ If the cursor has been requested before, it is retreived from the cursor cache,
+ otherwise it is created and cached.
+ @param aCursor the cursor to get
+ @result the Mac native implementation of the cursor
+*/
+- (nsMacCursor*)getCursor:(nsCursor)aCursor;
+
+/*! @method setMacCursor:
+ @abstract Set the current Mac native cursor
+ @discussion Sets the current cursor - this routine is what actually causes the cursor to change.
+ The argument is retained and the old cursor is released.
+ @param aMacCursor the cursor to set
+ @result NS_OK
+ */
+- (nsresult)setMacCursor:(nsMacCursor*)aMacCursor;
+
+/*! @method createCursor:
+ @abstract Create a Mac native representation of a cursor.
+ @discussion Creates a version of the Mac native representation of this cursor
+ @param aCursor the cursor to create
+ @result the Mac native implementation of the cursor
+*/
++ (nsMacCursor*)createCursor:(enum nsCursor)aCursor;
+
+@end
+
+@implementation nsCursorManager
+
++ (nsCursorManager*)sharedInstance {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ if (!gInstance) {
+ gInstance = [[nsCursorManager alloc] init];
+ }
+ return gInstance;
+
+ NS_OBJC_END_TRY_BLOCK_RETURN(nil);
+}
+
++ (void)dispose {
+ NS_OBJC_BEGIN_TRY_IGNORE_BLOCK;
+
+ [gInstance release];
+ gInstance = nil;
+
+ NS_OBJC_END_TRY_IGNORE_BLOCK;
+}
+
++ (nsMacCursor*)createCursor:(enum nsCursor)aCursor {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ switch (aCursor) {
+ case eCursor_standard:
+ return [nsMacCursor cursorWithCursor:[NSCursor arrowCursor] type:aCursor];
+ case eCursor_wait:
+ case eCursor_spinning: {
+ return [nsMacCursor cursorWithCursor:[NSCursor busyButClickableCursor] type:aCursor];
+ }
+ case eCursor_select:
+ return [nsMacCursor cursorWithCursor:[NSCursor IBeamCursor] type:aCursor];
+ case eCursor_hyperlink:
+ return [nsMacCursor cursorWithCursor:[NSCursor pointingHandCursor] type:aCursor];
+ case eCursor_crosshair:
+ return [nsMacCursor cursorWithCursor:[NSCursor crosshairCursor] type:aCursor];
+ case eCursor_move:
+ return [nsMacCursor cursorWithImageNamed:@"move" hotSpot:NSMakePoint(12, 12) type:aCursor];
+ case eCursor_help:
+ return [nsMacCursor cursorWithImageNamed:@"help" hotSpot:NSMakePoint(12, 12) type:aCursor];
+ case eCursor_copy: {
+ SEL cursorSelector = @selector(dragCopyCursor);
+ return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector]
+ ? [NSCursor performSelector:cursorSelector]
+ : [NSCursor arrowCursor]
+ type:aCursor];
+ }
+ case eCursor_alias: {
+ SEL cursorSelector = @selector(dragLinkCursor);
+ return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector]
+ ? [NSCursor performSelector:cursorSelector]
+ : [NSCursor arrowCursor]
+ type:aCursor];
+ }
+ case eCursor_context_menu: {
+ SEL cursorSelector = @selector(contextualMenuCursor);
+ return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector]
+ ? [NSCursor performSelector:cursorSelector]
+ : [NSCursor arrowCursor]
+ type:aCursor];
+ }
+ case eCursor_cell:
+ return [nsMacCursor cursorWithImageNamed:@"cell" hotSpot:NSMakePoint(12, 12) type:aCursor];
+ case eCursor_grab:
+ return [nsMacCursor cursorWithCursor:[NSCursor openHandCursor] type:aCursor];
+ case eCursor_grabbing:
+ return [nsMacCursor cursorWithCursor:[NSCursor closedHandCursor] type:aCursor];
+ case eCursor_zoom_in:
+ return [nsMacCursor cursorWithImageNamed:@"zoomIn" hotSpot:NSMakePoint(10, 10) type:aCursor];
+ case eCursor_zoom_out:
+ return [nsMacCursor cursorWithImageNamed:@"zoomOut" hotSpot:NSMakePoint(10, 10) type:aCursor];
+ case eCursor_vertical_text:
+ return [nsMacCursor cursorWithImageNamed:@"vtIBeam" hotSpot:NSMakePoint(12, 11) type:aCursor];
+ case eCursor_all_scroll:
+ return [nsMacCursor cursorWithCursor:[NSCursor openHandCursor] type:aCursor];
+ case eCursor_not_allowed:
+ case eCursor_no_drop: {
+ SEL cursorSelector = @selector(operationNotAllowedCursor);
+ return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector]
+ ? [NSCursor performSelector:cursorSelector]
+ : [NSCursor arrowCursor]
+ type:aCursor];
+ }
+ // Resize Cursors:
+ // North
+ case eCursor_n_resize:
+ return [nsMacCursor cursorWithCursor:[NSCursor resizeUpCursor] type:aCursor];
+ // North East
+ case eCursor_ne_resize:
+ return [nsMacCursor cursorWithImageNamed:@"sizeNE" hotSpot:NSMakePoint(12, 11) type:aCursor];
+ // East
+ case eCursor_e_resize:
+ return [nsMacCursor cursorWithCursor:[NSCursor resizeRightCursor] type:aCursor];
+ // South East
+ case eCursor_se_resize:
+ return [nsMacCursor cursorWithImageNamed:@"sizeSE" hotSpot:NSMakePoint(12, 12) type:aCursor];
+ // South
+ case eCursor_s_resize:
+ return [nsMacCursor cursorWithCursor:[NSCursor resizeDownCursor] type:aCursor];
+ // South West
+ case eCursor_sw_resize:
+ return [nsMacCursor cursorWithImageNamed:@"sizeSW" hotSpot:NSMakePoint(10, 12) type:aCursor];
+ // West
+ case eCursor_w_resize:
+ return [nsMacCursor cursorWithCursor:[NSCursor resizeLeftCursor] type:aCursor];
+ // North West
+ case eCursor_nw_resize:
+ return [nsMacCursor cursorWithImageNamed:@"sizeNW" hotSpot:NSMakePoint(11, 11) type:aCursor];
+ // North & South
+ case eCursor_ns_resize:
+ return [nsMacCursor cursorWithCursor:[NSCursor resizeUpDownCursor] type:aCursor];
+ // East & West
+ case eCursor_ew_resize:
+ return [nsMacCursor cursorWithCursor:[NSCursor resizeLeftRightCursor] type:aCursor];
+ // North East & South West
+ case eCursor_nesw_resize:
+ return [nsMacCursor cursorWithImageNamed:@"sizeNESW"
+ hotSpot:NSMakePoint(12, 12)
+ type:aCursor];
+ // North West & South East
+ case eCursor_nwse_resize:
+ return [nsMacCursor cursorWithImageNamed:@"sizeNWSE"
+ hotSpot:NSMakePoint(12, 12)
+ type:aCursor];
+ // Column Resize
+ case eCursor_col_resize:
+ return [nsMacCursor cursorWithImageNamed:@"colResize"
+ hotSpot:NSMakePoint(12, 12)
+ type:aCursor];
+ // Row Resize
+ case eCursor_row_resize:
+ return [nsMacCursor cursorWithImageNamed:@"rowResize"
+ hotSpot:NSMakePoint(12, 12)
+ type:aCursor];
+ default:
+ return [nsMacCursor cursorWithCursor:[NSCursor arrowCursor] type:aCursor];
+ }
+
+ NS_OBJC_END_TRY_BLOCK_RETURN(nil);
+}
+
+- (id)init {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ if ((self = [super init])) {
+ mCursors = [[NSMutableDictionary alloc] initWithCapacity:25];
+ }
+ return self;
+
+ NS_OBJC_END_TRY_BLOCK_RETURN(nil);
+}
+
+- (nsresult)setNonCustomCursor:(const nsIWidget::Cursor&)aCursor {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ [self setMacCursor:[self getCursor:aCursor.mDefaultCursor]];
+
+ sCurrentCursor = aCursor;
+ return NS_OK;
+
+ NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
+}
+
+- (nsresult)setMacCursor:(nsMacCursor*)aMacCursor {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ nsCursor oldType = [mCurrentMacCursor type];
+ nsCursor newType = [aMacCursor type];
+ if (oldType != newType) {
+ if (newType == eCursor_none) {
+ [NSCursor hide];
+ } else if (oldType == eCursor_none) {
+ [NSCursor unhide];
+ }
+ }
+
+ if (mCurrentMacCursor != aMacCursor || ![mCurrentMacCursor isSet]) {
+ [aMacCursor retain];
+ [mCurrentMacCursor unset];
+ [aMacCursor set];
+ [mCurrentMacCursor release];
+ mCurrentMacCursor = aMacCursor;
+ }
+
+ return NS_OK;
+
+ NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
+}
+
+- (nsresult)setCustomCursor:(const nsIWidget::Cursor&)aCursor
+ widgetScaleFactor:(CGFloat)scaleFactor {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ // As the user moves the mouse, this gets called repeatedly with the same aCursorImage
+ if (sCurrentCursor == aCursor && sCurrentCursorScaleFactor == scaleFactor && mCurrentMacCursor) {
+ // Native dragging can unset our cursor apparently (see bug 1739352).
+ if (MOZ_UNLIKELY(![mCurrentMacCursor isSet])) {
+ [mCurrentMacCursor set];
+ }
+ return NS_OK;
+ }
+
+ sCurrentCursor = aCursor;
+ sCurrentCursorScaleFactor = scaleFactor;
+
+ if (!aCursor.IsCustom()) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsIntSize size = nsIWidget::CustomCursorSize(aCursor);
+ // prevent DoS attacks
+ if (size.width > 128 || size.height > 128) {
+ return NS_ERROR_FAILURE;
+ }
+
+ NSImage* cursorImage;
+ nsresult rv = nsCocoaUtils::CreateNSImageFromImageContainer(
+ aCursor.mContainer, imgIContainer::FRAME_FIRST, nullptr, nullptr, &cursorImage, scaleFactor);
+ if (NS_FAILED(rv) || !cursorImage) {
+ return NS_ERROR_FAILURE;
+ }
+
+ {
+ NSSize cocoaSize = NSMakeSize(size.width, size.height);
+ [cursorImage setSize:cocoaSize];
+ [[[cursorImage representations] objectAtIndex:0] setSize:cocoaSize];
+ }
+
+ // if the hotspot is nonsensical, make it 0,0
+ uint32_t hotspotX = aCursor.mHotspotX > (uint32_t(size.width) - 1) ? 0 : aCursor.mHotspotX;
+ uint32_t hotspotY = aCursor.mHotspotY > (uint32_t(size.height) - 1) ? 0 : aCursor.mHotspotY;
+ NSPoint hotSpot = ::NSMakePoint(hotspotX, hotspotY);
+ [self setMacCursor:[nsMacCursor cursorWithCursor:[[NSCursor alloc] initWithImage:cursorImage
+ hotSpot:hotSpot]
+ type:kCustomCursor]];
+ [cursorImage release];
+ return NS_OK;
+
+ NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
+}
+
+- (nsMacCursor*)getCursor:(enum nsCursor)aCursor {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ nsMacCursor* result = [mCursors objectForKey:[NSNumber numberWithInt:aCursor]];
+ if (!result) {
+ result = [nsCursorManager createCursor:aCursor];
+ [mCursors setObject:result forKey:[NSNumber numberWithInt:aCursor]];
+ }
+ return result;
+
+ NS_OBJC_END_TRY_BLOCK_RETURN(nil);
+}
+
+- (void)dealloc {
+ NS_OBJC_BEGIN_TRY_IGNORE_BLOCK;
+
+ [mCurrentMacCursor unset];
+ [mCurrentMacCursor release];
+ [mCursors release];
+ sCurrentCursor = {};
+ [super dealloc];
+
+ NS_OBJC_END_TRY_IGNORE_BLOCK;
+}
+
+@end