-
Notifications
You must be signed in to change notification settings - Fork 15.1k
/
native_browser_view_mac.mm
370 lines (303 loc) · 11.8 KB
/
native_browser_view_mac.mm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
// Copyright (c) 2017 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/browser/native_browser_view_mac.h"
#import <objc/runtime.h>
#include <vector>
#include "shell/browser/ui/drag_util.h"
#include "shell/browser/ui/inspectable_web_contents.h"
#include "shell/browser/ui/inspectable_web_contents_view.h"
#include "skia/ext/skia_utils_mac.h"
#include "ui/gfx/geometry/rect.h"
// Match view::Views behavior where the view sticks to the top-left origin.
const NSAutoresizingMaskOptions kDefaultAutoResizingMask =
NSViewMaxXMargin | NSViewMinYMargin;
@interface DragRegionView : NSView
@property(assign) NSPoint initialLocation;
@end
@interface NSWindow ()
- (void)performWindowDragWithEvent:(NSEvent*)event;
@end
@implementation DragRegionView
@synthesize initialLocation;
+ (void)load {
if (getenv("ELECTRON_DEBUG_DRAG_REGIONS")) {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
SEL originalSelector = @selector(drawRect:);
SEL swizzledSelector = @selector(drawDebugRect:);
Method originalMethod =
class_getInstanceMethod([self class], originalSelector);
Method swizzledMethod =
class_getInstanceMethod([self class], swizzledSelector);
BOOL didAddMethod =
class_addMethod([self class], originalSelector,
method_getImplementation(swizzledMethod),
method_getTypeEncoding(swizzledMethod));
if (didAddMethod) {
class_replaceMethod([self class], swizzledSelector,
method_getImplementation(originalMethod),
method_getTypeEncoding(originalMethod));
} else {
method_exchangeImplementations(originalMethod, swizzledMethod);
}
});
}
}
- (BOOL)mouseDownCanMoveWindow {
return NO;
}
- (BOOL)acceptsFirstMouse:(NSEvent*)event {
return YES;
}
- (BOOL)shouldIgnoreMouseEvent {
NSEventType type = [[NSApp currentEvent] type];
return type != NSEventTypeLeftMouseDragged &&
type != NSEventTypeLeftMouseDown;
}
- (NSView*)hitTest:(NSPoint)point {
// Pass-through events that hit one of the exclusion zones
for (NSView* exclusion_zones in [self subviews]) {
if ([exclusion_zones hitTest:point])
return nil;
}
return self;
}
- (void)mouseDown:(NSEvent*)event {
[super mouseDown:event];
if ([self.window respondsToSelector:@selector(performWindowDragWithEvent)]) {
// According to Google, using performWindowDragWithEvent:
// does not generate a NSWindowWillMoveNotification. Hence post one.
[[NSNotificationCenter defaultCenter]
postNotificationName:NSWindowWillMoveNotification
object:self];
if (@available(macOS 10.11, *)) {
[self.window performWindowDragWithEvent:event];
}
return;
}
if (self.window.styleMask & NSWindowStyleMaskFullScreen) {
return;
}
self.initialLocation = [event locationInWindow];
}
- (void)mouseDragged:(NSEvent*)event {
if ([self.window respondsToSelector:@selector(performWindowDragWithEvent)]) {
return;
}
if (self.window.styleMask & NSWindowStyleMaskFullScreen) {
return;
}
NSPoint currentLocation = [NSEvent mouseLocation];
NSPoint newOrigin;
NSRect screenFrame = [[NSScreen mainScreen] frame];
NSSize screenSize = screenFrame.size;
NSRect windowFrame = [self.window frame];
NSSize windowSize = windowFrame.size;
newOrigin.x = currentLocation.x - self.initialLocation.x;
newOrigin.y = currentLocation.y - self.initialLocation.y;
BOOL inMenuBar = (newOrigin.y + windowSize.height) >
(screenFrame.origin.y + screenSize.height);
BOOL screenAboveMainScreen = false;
if (inMenuBar) {
for (NSScreen* screen in [NSScreen screens]) {
NSRect currentScreenFrame = [screen frame];
BOOL isHigher = currentScreenFrame.origin.y > screenFrame.origin.y;
// If there's another screen that is generally above the current screen,
// we'll draw a new rectangle that is just above the current screen. If
// the "higher" screen intersects with this rectangle, we'll allow drawing
// above the menubar.
if (isHigher) {
NSRect aboveScreenRect =
NSMakeRect(screenFrame.origin.x,
screenFrame.origin.y + screenFrame.size.height - 10,
screenFrame.size.width, 200);
BOOL screenAboveIntersects =
NSIntersectsRect(currentScreenFrame, aboveScreenRect);
if (screenAboveIntersects) {
screenAboveMainScreen = true;
break;
}
}
}
}
// Don't let window get dragged up under the menu bar
if (inMenuBar && !screenAboveMainScreen) {
newOrigin.y = screenFrame.origin.y +
(screenFrame.size.height - windowFrame.size.height);
}
// Move the window to the new location
[self.window setFrameOrigin:newOrigin];
}
// For debugging purposes only.
- (void)drawDebugRect:(NSRect)aRect {
[[[NSColor greenColor] colorWithAlphaComponent:0.5] set];
NSRectFill([self bounds]);
}
@end
@interface ExcludeDragRegionView : NSView
@end
@implementation ExcludeDragRegionView
+ (void)load {
if (getenv("ELECTRON_DEBUG_DRAG_REGIONS")) {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
SEL originalSelector = @selector(drawRect:);
SEL swizzledSelector = @selector(drawDebugRect:);
Method originalMethod =
class_getInstanceMethod([self class], originalSelector);
Method swizzledMethod =
class_getInstanceMethod([self class], swizzledSelector);
BOOL didAddMethod =
class_addMethod([self class], originalSelector,
method_getImplementation(swizzledMethod),
method_getTypeEncoding(swizzledMethod));
if (didAddMethod) {
class_replaceMethod([self class], swizzledSelector,
method_getImplementation(originalMethod),
method_getTypeEncoding(originalMethod));
} else {
method_exchangeImplementations(originalMethod, swizzledMethod);
}
});
}
}
- (BOOL)mouseDownCanMoveWindow {
return NO;
}
// For debugging purposes only.
- (void)drawDebugRect:(NSRect)aRect {
[[[NSColor redColor] colorWithAlphaComponent:0.5] set];
NSRectFill([self bounds]);
}
@end
namespace electron {
NativeBrowserViewMac::NativeBrowserViewMac(
InspectableWebContents* inspectable_web_contents)
: NativeBrowserView(inspectable_web_contents) {
auto* iwc_view = GetInspectableWebContentsView();
if (!iwc_view)
return;
auto* view = iwc_view->GetNativeView().GetNativeNSView();
view.autoresizingMask = kDefaultAutoResizingMask;
}
NativeBrowserViewMac::~NativeBrowserViewMac() {}
void NativeBrowserViewMac::SetAutoResizeFlags(uint8_t flags) {
NSAutoresizingMaskOptions autoresizing_mask = kDefaultAutoResizingMask;
if (flags & kAutoResizeWidth) {
autoresizing_mask |= NSViewWidthSizable;
}
if (flags & kAutoResizeHeight) {
autoresizing_mask |= NSViewHeightSizable;
}
if (flags & kAutoResizeHorizontal) {
autoresizing_mask |=
NSViewMaxXMargin | NSViewMinXMargin | NSViewWidthSizable;
}
if (flags & kAutoResizeVertical) {
autoresizing_mask |=
NSViewMaxYMargin | NSViewMinYMargin | NSViewHeightSizable;
}
auto* iwc_view = GetInspectableWebContentsView();
if (!iwc_view)
return;
auto* view = iwc_view->GetNativeView().GetNativeNSView();
view.autoresizingMask = autoresizing_mask;
}
void NativeBrowserViewMac::SetBounds(const gfx::Rect& bounds) {
auto* iwc_view = GetInspectableWebContentsView();
if (!iwc_view)
return;
auto* view = iwc_view->GetNativeView().GetNativeNSView();
auto* superview = view.superview;
const auto superview_height = superview ? superview.frame.size.height : 0;
view.frame =
NSMakeRect(bounds.x(), superview_height - bounds.y() - bounds.height(),
bounds.width(), bounds.height());
// Ensure draggable regions are properly updated to reflect new bounds.
UpdateDraggableRegions(draggable_regions_);
}
gfx::Rect NativeBrowserViewMac::GetBounds() {
auto* iwc_view = GetInspectableWebContentsView();
if (!iwc_view)
return gfx::Rect();
NSView* view = iwc_view->GetNativeView().GetNativeNSView();
const int superview_height =
(view.superview) ? view.superview.frame.size.height : 0;
return gfx::Rect(
view.frame.origin.x,
superview_height - view.frame.origin.y - view.frame.size.height,
view.frame.size.width, view.frame.size.height);
}
void NativeBrowserViewMac::SetBackgroundColor(SkColor color) {
auto* iwc_view = GetInspectableWebContentsView();
if (!iwc_view)
return;
auto* view = iwc_view->GetNativeView().GetNativeNSView();
view.wantsLayer = YES;
view.layer.backgroundColor = skia::CGColorCreateFromSkColor(color);
}
void NativeBrowserViewMac::UpdateDraggableRegions(
const std::vector<gfx::Rect>& drag_exclude_rects) {
if (!inspectable_web_contents_)
return;
auto* web_contents = inspectable_web_contents_->GetWebContents();
auto* iwc_view = GetInspectableWebContentsView();
NSView* web_view = web_contents->GetNativeView().GetNativeNSView();
NSView* inspectable_view = iwc_view->GetNativeView().GetNativeNSView();
NSView* window_content_view = inspectable_view.superview;
// Remove all DragRegionViews that were added last time. Note that we need
// to copy the `subviews` array to avoid mutation during iteration.
base::scoped_nsobject<NSArray> subviews([[web_view subviews] copy]);
for (NSView* subview in subviews.get()) {
if ([subview isKindOfClass:[DragRegionView class]]) {
[subview removeFromSuperview];
}
}
// Create one giant NSView that is draggable.
base::scoped_nsobject<NSView> drag_region_view(
[[DragRegionView alloc] initWithFrame:web_view.bounds]);
[web_view addSubview:drag_region_view];
// Then, on top of that, add "exclusion zones".
auto const offset = GetBounds().OffsetFromOrigin();
const auto window_content_view_height = NSHeight(window_content_view.bounds);
for (const auto& rect : drag_exclude_rects) {
const auto x = rect.x() + offset.x();
const auto y = window_content_view_height - (rect.bottom() + offset.y());
const auto exclude_rect = NSMakeRect(x, y, rect.width(), rect.height());
const auto drag_region_view_exclude_rect =
[window_content_view convertRect:exclude_rect toView:drag_region_view];
base::scoped_nsobject<NSView> exclude_drag_region_view(
[[ExcludeDragRegionView alloc]
initWithFrame:drag_region_view_exclude_rect]);
[drag_region_view addSubview:exclude_drag_region_view];
}
}
void NativeBrowserViewMac::UpdateDraggableRegions(
const std::vector<mojom::DraggableRegionPtr>& regions) {
if (!inspectable_web_contents_)
return;
auto* web_contents = inspectable_web_contents_->GetWebContents();
NSView* web_view = web_contents->GetNativeView().GetNativeNSView();
NSInteger webViewWidth = NSWidth([web_view bounds]);
NSInteger webViewHeight = NSHeight([web_view bounds]);
// Draggable regions are implemented by having the whole web view draggable
// and overlaying regions that are not draggable.
if (&draggable_regions_ != ®ions)
draggable_regions_ = mojo::Clone(regions);
std::vector<gfx::Rect> drag_exclude_rects;
if (draggable_regions_.empty()) {
drag_exclude_rects.emplace_back(0, 0, webViewWidth, webViewHeight);
} else {
drag_exclude_rects = CalculateNonDraggableRegions(
DraggableRegionsToSkRegion(draggable_regions_), webViewWidth,
webViewHeight);
}
UpdateDraggableRegions(drag_exclude_rects);
}
// static
NativeBrowserView* NativeBrowserView::Create(
InspectableWebContents* inspectable_web_contents) {
return new NativeBrowserViewMac(inspectable_web_contents);
}
} // namespace electron