forked from mirrors/gecko-dev
127b46abb1
This required more refactoring so it seemed sensible to split it out. GTK doesn't seem to provide an API for scaled cursors so we get pixelated cursors instead. Differential Revision: https://phabricator.services.mozilla.com/D112676
316 lines
12 KiB
Text
316 lines
12 KiB
Text
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "imgIContainer.h"
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#include "nsCocoaUtils.h"
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#include "nsCursorManager.h"
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#include "nsObjCExceptions.h"
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#include <math.h>
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static nsCursorManager* gInstance;
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static CGFloat sCurrentCursorScaleFactor = 0.0f;
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static nsIWidget::Cursor sCurrentCursor;
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static constexpr nsCursor kCustomCursor = eCursorCount;
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/*! @category nsCursorManager(PrivateMethods)
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Private methods for the cursor manager class.
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*/
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@interface nsCursorManager (PrivateMethods)
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/*! @method getCursor:
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@abstract Get a reference to the native Mac representation of a cursor.
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@discussion Gets a reference to the Mac native implementation of a cursor.
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If the cursor has been requested before, it is retreived from the cursor cache,
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otherwise it is created and cached.
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@param aCursor the cursor to get
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@result the Mac native implementation of the cursor
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*/
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- (nsMacCursor*)getCursor:(nsCursor)aCursor;
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/*! @method setMacCursor:
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@abstract Set the current Mac native cursor
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@discussion Sets the current cursor - this routine is what actually causes the cursor to change.
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The argument is retained and the old cursor is released.
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@param aMacCursor the cursor to set
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@result NS_OK
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*/
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- (nsresult)setMacCursor:(nsMacCursor*)aMacCursor;
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/*! @method createCursor:
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@abstract Create a Mac native representation of a cursor.
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@discussion Creates a version of the Mac native representation of this cursor
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@param aCursor the cursor to create
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@result the Mac native implementation of the cursor
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*/
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+ (nsMacCursor*)createCursor:(enum nsCursor)aCursor;
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@end
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@implementation nsCursorManager
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+ (nsCursorManager*)sharedInstance {
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NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
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if (!gInstance) {
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gInstance = [[nsCursorManager alloc] init];
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}
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return gInstance;
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NS_OBJC_END_TRY_BLOCK_RETURN(nil);
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}
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+ (void)dispose {
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NS_OBJC_BEGIN_TRY_IGNORE_BLOCK;
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[gInstance release];
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gInstance = nil;
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NS_OBJC_END_TRY_IGNORE_BLOCK;
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}
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+ (nsMacCursor*)createCursor:(enum nsCursor)aCursor {
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NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
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switch (aCursor) {
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SEL cursorSelector;
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case eCursor_standard:
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return [nsMacCursor cursorWithCursor:[NSCursor arrowCursor] type:aCursor];
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case eCursor_wait:
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case eCursor_spinning: {
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return [nsMacCursor cursorWithCursor:[NSCursor busyButClickableCursor] type:aCursor];
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}
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case eCursor_select:
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return [nsMacCursor cursorWithCursor:[NSCursor IBeamCursor] type:aCursor];
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case eCursor_hyperlink:
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return [nsMacCursor cursorWithCursor:[NSCursor pointingHandCursor] type:aCursor];
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case eCursor_crosshair:
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return [nsMacCursor cursorWithCursor:[NSCursor crosshairCursor] type:aCursor];
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case eCursor_move:
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return [nsMacCursor cursorWithImageNamed:@"move" hotSpot:NSMakePoint(12, 12) type:aCursor];
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case eCursor_help:
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return [nsMacCursor cursorWithImageNamed:@"help" hotSpot:NSMakePoint(12, 12) type:aCursor];
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case eCursor_copy:
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cursorSelector = @selector(dragCopyCursor);
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return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector]
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? [NSCursor performSelector:cursorSelector]
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: [NSCursor arrowCursor]
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type:aCursor];
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case eCursor_alias:
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cursorSelector = @selector(dragLinkCursor);
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return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector]
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? [NSCursor performSelector:cursorSelector]
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: [NSCursor arrowCursor]
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type:aCursor];
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case eCursor_context_menu:
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cursorSelector = @selector(contextualMenuCursor);
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return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector]
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? [NSCursor performSelector:cursorSelector]
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: [NSCursor arrowCursor]
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type:aCursor];
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case eCursor_cell:
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return [nsMacCursor cursorWithImageNamed:@"cell" hotSpot:NSMakePoint(12, 12) type:aCursor];
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case eCursor_grab:
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return [nsMacCursor cursorWithCursor:[NSCursor openHandCursor] type:aCursor];
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case eCursor_grabbing:
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return [nsMacCursor cursorWithCursor:[NSCursor closedHandCursor] type:aCursor];
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case eCursor_zoom_in:
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return [nsMacCursor cursorWithImageNamed:@"zoomIn" hotSpot:NSMakePoint(10, 10) type:aCursor];
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case eCursor_zoom_out:
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return [nsMacCursor cursorWithImageNamed:@"zoomOut" hotSpot:NSMakePoint(10, 10) type:aCursor];
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case eCursor_vertical_text:
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return [nsMacCursor cursorWithImageNamed:@"vtIBeam" hotSpot:NSMakePoint(12, 11) type:aCursor];
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case eCursor_all_scroll:
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return [nsMacCursor cursorWithCursor:[NSCursor openHandCursor] type:aCursor];
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case eCursor_not_allowed:
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case eCursor_no_drop:
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cursorSelector = @selector(operationNotAllowedCursor);
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return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector]
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? [NSCursor performSelector:cursorSelector]
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: [NSCursor arrowCursor]
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type:aCursor];
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// Resize Cursors:
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// North
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case eCursor_n_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeUpCursor] type:aCursor];
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// North East
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case eCursor_ne_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeNE" hotSpot:NSMakePoint(12, 11) type:aCursor];
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// East
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case eCursor_e_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeRightCursor] type:aCursor];
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// South East
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case eCursor_se_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeSE" hotSpot:NSMakePoint(12, 12) type:aCursor];
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// South
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case eCursor_s_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeDownCursor] type:aCursor];
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// South West
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case eCursor_sw_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeSW" hotSpot:NSMakePoint(10, 12) type:aCursor];
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// West
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case eCursor_w_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeLeftCursor] type:aCursor];
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// North West
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case eCursor_nw_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeNW" hotSpot:NSMakePoint(11, 11) type:aCursor];
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// North & South
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case eCursor_ns_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeUpDownCursor] type:aCursor];
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// East & West
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case eCursor_ew_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeLeftRightCursor] type:aCursor];
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// North East & South West
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case eCursor_nesw_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeNESW"
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hotSpot:NSMakePoint(12, 12)
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type:aCursor];
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// North West & South East
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case eCursor_nwse_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeNWSE"
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hotSpot:NSMakePoint(12, 12)
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type:aCursor];
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// Column Resize
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case eCursor_col_resize:
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return [nsMacCursor cursorWithImageNamed:@"colResize"
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hotSpot:NSMakePoint(12, 12)
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type:aCursor];
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// Row Resize
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case eCursor_row_resize:
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return [nsMacCursor cursorWithImageNamed:@"rowResize"
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hotSpot:NSMakePoint(12, 12)
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type:aCursor];
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default:
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return [nsMacCursor cursorWithCursor:[NSCursor arrowCursor] type:aCursor];
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}
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NS_OBJC_END_TRY_BLOCK_RETURN(nil);
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}
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- (id)init {
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NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
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if ((self = [super init])) {
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mCursors = [[NSMutableDictionary alloc] initWithCapacity:25];
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}
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return self;
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NS_OBJC_END_TRY_BLOCK_RETURN(nil);
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}
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- (nsresult)setNonCustomCursor:(const nsIWidget::Cursor&)aCursor {
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NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
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[self setMacCursor:[self getCursor:aCursor.mDefaultCursor]];
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sCurrentCursor = aCursor;
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return NS_OK;
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NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
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}
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- (nsresult)setMacCursor:(nsMacCursor*)aMacCursor {
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NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
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// Some plugins mess with our cursors and set a cursor that even
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// [NSCursor currentCursor] doesn't know about. In case that happens, just
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// reset the state.
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[[NSCursor currentCursor] set];
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nsCursor oldType = [mCurrentMacCursor type];
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nsCursor newType = [aMacCursor type];
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if (oldType != newType) {
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if (newType == eCursor_none) {
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[NSCursor hide];
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} else if (oldType == eCursor_none) {
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[NSCursor unhide];
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}
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}
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if (mCurrentMacCursor != aMacCursor || ![mCurrentMacCursor isSet]) {
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[aMacCursor retain];
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[mCurrentMacCursor unset];
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[aMacCursor set];
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[mCurrentMacCursor release];
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mCurrentMacCursor = aMacCursor;
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}
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return NS_OK;
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NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
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}
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- (nsresult)setCustomCursor:(const nsIWidget::Cursor&)aCursor
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widgetScaleFactor:(CGFloat)scaleFactor {
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NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
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// As the user moves the mouse, this gets called repeatedly with the same aCursorImage
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if (sCurrentCursor == aCursor && sCurrentCursorScaleFactor == scaleFactor && mCurrentMacCursor) {
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[self setMacCursor:mCurrentMacCursor];
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return NS_OK;
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}
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sCurrentCursor = aCursor;
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sCurrentCursorScaleFactor = scaleFactor;
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if (!aCursor.IsCustom()) {
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return NS_ERROR_FAILURE;
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}
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nsIntSize size = nsIWidget::CustomCursorSize(aCursor);
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// prevent DoS attacks
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if (size.width > 128 || size.height > 128) {
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return NS_ERROR_FAILURE;
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}
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NSImage* cursorImage;
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nsresult rv = nsCocoaUtils::CreateNSImageFromImageContainer(
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aCursor.mContainer, imgIContainer::FRAME_FIRST, nullptr, &cursorImage, scaleFactor);
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if (NS_FAILED(rv) || !cursorImage) {
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return NS_ERROR_FAILURE;
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}
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{
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NSSize cocoaSize = NSMakeSize(size.width, size.height);
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[cursorImage setSize:cocoaSize];
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[[[cursorImage representations] objectAtIndex:0] setSize:cocoaSize];
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}
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// if the hotspot is nonsensical, make it 0,0
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uint32_t hotspotX = aCursor.mHotspotX > (uint32_t(size.width) - 1) ? 0 : aCursor.mHotspotX;
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uint32_t hotspotY = aCursor.mHotspotY > (uint32_t(size.height) - 1) ? 0 : aCursor.mHotspotY;
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NSPoint hotSpot = ::NSMakePoint(hotspotX, hotspotY);
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[self setMacCursor:[nsMacCursor cursorWithCursor:[[NSCursor alloc] initWithImage:cursorImage
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hotSpot:hotSpot]
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type:kCustomCursor]];
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[cursorImage release];
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return NS_OK;
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NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
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}
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- (nsMacCursor*)getCursor:(enum nsCursor)aCursor {
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NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
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nsMacCursor* result = [mCursors objectForKey:[NSNumber numberWithInt:aCursor]];
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if (!result) {
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result = [nsCursorManager createCursor:aCursor];
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[mCursors setObject:result forKey:[NSNumber numberWithInt:aCursor]];
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}
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return result;
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NS_OBJC_END_TRY_BLOCK_RETURN(nil);
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}
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- (void)dealloc {
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NS_OBJC_BEGIN_TRY_IGNORE_BLOCK;
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[mCurrentMacCursor unset];
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[mCurrentMacCursor release];
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[mCursors release];
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sCurrentCursor = {};
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[super dealloc];
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NS_OBJC_END_TRY_IGNORE_BLOCK;
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}
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@end
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