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
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkTypes.h"
#if defined(SK_BUILD_FOR_WIN)
#include <GL/gl.h>
#include <WindowsX.h>
#include "SkWGL.h"
#include "SkWindow.h"
#include "SkCanvas.h"
#include "SkOSMenu.h"
#include "SkTime.h"
#include "SkUtils.h"
#include "SkGraphics.h"
#if SK_ANGLE
#include "gl/GrGLInterface.h"
#include "GLES2/gl2.h"
#define ANGLE_GL_CALL(IFACE, X) \
do { \
(IFACE)->f##X; \
} while (false)
#endif
#define INVALIDATE_DELAY_MS 200
static SkOSWindow* gCurrOSWin;
static HWND gEventTarget;
#define WM_EVENT_CALLBACK (WM_USER+0)
void post_skwinevent()
{
PostMessage(gEventTarget, WM_EVENT_CALLBACK, 0, 0);
}
SkOSWindow::SkOSWindow(void* hWnd) {
fHWND = hWnd;
#if SK_SUPPORT_GPU
#if SK_ANGLE
fDisplay = EGL_NO_DISPLAY;
fContext = EGL_NO_CONTEXT;
fSurface = EGL_NO_SURFACE;
#endif
fHGLRC = NULL;
#endif
fAttached = kNone_BackEndType;
gEventTarget = (HWND)hWnd;
}
SkOSWindow::~SkOSWindow() {
#if SK_SUPPORT_GPU
if (NULL != fHGLRC) {
wglDeleteContext((HGLRC)fHGLRC);
}
#if SK_ANGLE
if (EGL_NO_CONTEXT != fContext) {
eglDestroyContext(fDisplay, fContext);
fContext = EGL_NO_CONTEXT;
}
if (EGL_NO_SURFACE != fSurface) {
eglDestroySurface(fDisplay, fSurface);
fSurface = EGL_NO_SURFACE;
}
if (EGL_NO_DISPLAY != fDisplay) {
eglTerminate(fDisplay);
fDisplay = EGL_NO_DISPLAY;
}
#endif // SK_ANGLE
#endif // SK_SUPPORT_GPU
}
static SkKey winToskKey(WPARAM vk) {
static const struct {
WPARAM fVK;
SkKey fKey;
} gPair[] = {
{ VK_BACK, kBack_SkKey },
{ VK_CLEAR, kBack_SkKey },
{ VK_RETURN, kOK_SkKey },
{ VK_UP, kUp_SkKey },
{ VK_DOWN, kDown_SkKey },
{ VK_LEFT, kLeft_SkKey },
{ VK_RIGHT, kRight_SkKey }
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gPair); i++) {
if (gPair[i].fVK == vk) {
return gPair[i].fKey;
}
}
return kNONE_SkKey;
}
static unsigned getModifiers(UINT message) {
return 0; // TODO
}
bool SkOSWindow::wndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
switch (message) {
case WM_KEYDOWN: {
SkKey key = winToskKey(wParam);
if (kNONE_SkKey != key) {
this->handleKey(key);
return true;
}
} break;
case WM_KEYUP: {
SkKey key = winToskKey(wParam);
if (kNONE_SkKey != key) {
this->handleKeyUp(key);
return true;
}
} break;
case WM_UNICHAR:
this->handleChar(wParam);
return true;
case WM_CHAR: {
this->handleChar(SkUTF8_ToUnichar((char*)&wParam));
return true;
} break;
case WM_SIZE:
this->resize(lParam & 0xFFFF, lParam >> 16);
break;
case WM_PAINT: {
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hWnd, &ps);
this->doPaint(hdc);
EndPaint(hWnd, &ps);
return true;
} break;
case WM_TIMER: {
RECT* rect = (RECT*)wParam;
InvalidateRect(hWnd, rect, FALSE);
KillTimer(hWnd, (UINT_PTR)rect);
delete rect;
return true;
} break;
case WM_LBUTTONDOWN:
this->handleClick(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam),
Click::kDown_State, NULL, getModifiers(message));
return true;
case WM_MOUSEMOVE:
this->handleClick(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam),
Click::kMoved_State, NULL, getModifiers(message));
return true;
case WM_LBUTTONUP:
this->handleClick(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam),
Click::kUp_State, NULL, getModifiers(message));
return true;
case WM_EVENT_CALLBACK:
if (SkEvent::ProcessEvent()) {
post_skwinevent();
}
return true;
}
return false;
}
void SkOSWindow::doPaint(void* ctx) {
this->update(NULL);
if (kNone_BackEndType == fAttached)
{
HDC hdc = (HDC)ctx;
const SkBitmap& bitmap = this->getBitmap();
BITMAPINFO bmi;
memset(&bmi, 0, sizeof(bmi));
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = bitmap.width();
bmi.bmiHeader.biHeight = -bitmap.height(); // top-down image
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 32;
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = 0;
//
// Do the SetDIBitsToDevice.
//
// TODO(wjmaclean):
// Fix this call to handle SkBitmaps that have rowBytes != width,
// i.e. may have padding at the end of lines. The SkASSERT below
// may be ignored by builds, and the only obviously safe option
// seems to be to copy the bitmap to a temporary (contiguous)
// buffer before passing to SetDIBitsToDevice().
SkASSERT(bitmap.width() * bitmap.bytesPerPixel() == bitmap.rowBytes());
bitmap.lockPixels();
int iRet = SetDIBitsToDevice(hdc,
0, 0,
bitmap.width(), bitmap.height(),
0, 0,
0, bitmap.height(),
bitmap.getPixels(),
&bmi,
DIB_RGB_COLORS);
bitmap.unlockPixels();
}
}
#if 0
void SkOSWindow::updateSize()
{
RECT r;
GetWindowRect((HWND)this->getHWND(), &r);
this->resize(r.right - r.left, r.bottom - r.top);
}
#endif
void SkOSWindow::onHandleInval(const SkIRect& r) {
RECT* rect = new RECT;
rect->left = r.fLeft;
rect->top = r.fTop;
rect->right = r.fRight;
rect->bottom = r.fBottom;
SetTimer((HWND)fHWND, (UINT_PTR)rect, INVALIDATE_DELAY_MS, NULL);
}
void SkOSWindow::onAddMenu(const SkOSMenu* sk_menu)
{
}
void SkOSWindow::onSetTitle(const char title[]){
SetWindowTextA((HWND)fHWND, title);
}
enum {
SK_MacReturnKey = 36,
SK_MacDeleteKey = 51,
SK_MacEndKey = 119,
SK_MacLeftKey = 123,
SK_MacRightKey = 124,
SK_MacDownKey = 125,
SK_MacUpKey = 126,
SK_Mac0Key = 0x52,
SK_Mac1Key = 0x53,
SK_Mac2Key = 0x54,
SK_Mac3Key = 0x55,
SK_Mac4Key = 0x56,
SK_Mac5Key = 0x57,
SK_Mac6Key = 0x58,
SK_Mac7Key = 0x59,
SK_Mac8Key = 0x5b,
SK_Mac9Key = 0x5c
};
static SkKey raw2key(uint32_t raw)
{
static const struct {
uint32_t fRaw;
SkKey fKey;
} gKeys[] = {
{ SK_MacUpKey, kUp_SkKey },
{ SK_MacDownKey, kDown_SkKey },
{ SK_MacLeftKey, kLeft_SkKey },
{ SK_MacRightKey, kRight_SkKey },
{ SK_MacReturnKey, kOK_SkKey },
{ SK_MacDeleteKey, kBack_SkKey },
{ SK_MacEndKey, kEnd_SkKey },
{ SK_Mac0Key, k0_SkKey },
{ SK_Mac1Key, k1_SkKey },
{ SK_Mac2Key, k2_SkKey },
{ SK_Mac3Key, k3_SkKey },
{ SK_Mac4Key, k4_SkKey },
{ SK_Mac5Key, k5_SkKey },
{ SK_Mac6Key, k6_SkKey },
{ SK_Mac7Key, k7_SkKey },
{ SK_Mac8Key, k8_SkKey },
{ SK_Mac9Key, k9_SkKey }
};
for (unsigned i = 0; i < SK_ARRAY_COUNT(gKeys); i++)
if (gKeys[i].fRaw == raw)
return gKeys[i].fKey;
return kNONE_SkKey;
}
///////////////////////////////////////////////////////////////////////////////////////
void SkEvent::SignalNonEmptyQueue()
{
post_skwinevent();
//SkDebugf("signal nonempty\n");
}
static UINT_PTR gTimer;
VOID CALLBACK sk_timer_proc(HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime)
{
SkEvent::ServiceQueueTimer();
//SkDebugf("timer task fired\n");
}
void SkEvent::SignalQueueTimer(SkMSec delay)
{
if (gTimer)
{
KillTimer(NULL, gTimer);
gTimer = NULL;
}
if (delay)
{
gTimer = SetTimer(NULL, 0, delay, sk_timer_proc);
//SkDebugf("SetTimer of %d returned %d\n", delay, gTimer);
}
}
#if SK_SUPPORT_GPU
HGLRC create_gl(HWND hwnd, int msaaSampleCount) {
HDC dc = GetDC(hwnd);
SkWGLExtensions extensions;
if (!extensions.hasExtension(dc, "WGL_ARB_pixel_format")) {
return NULL;
}
HDC prevDC = wglGetCurrentDC();
HGLRC prevGLRC = wglGetCurrentContext();
PIXELFORMATDESCRIPTOR pfd;
int format = 0;
static const GLint iAttrs[] = {
SK_WGL_DRAW_TO_WINDOW, TRUE,
SK_WGL_DOUBLE_BUFFER, TRUE,
SK_WGL_ACCELERATION, SK_WGL_FULL_ACCELERATION,
SK_WGL_SUPPORT_OPENGL, TRUE,
SK_WGL_COLOR_BITS, 24,
SK_WGL_ALPHA_BITS, 8,
SK_WGL_STENCIL_BITS, 8,
0, 0
};
GLfloat fAttrs[] = {0, 0};
if (msaaSampleCount > 0 &&
extensions.hasExtension(dc, "WGL_ARB_multisample")) {
static const int kIAttrsCount = SK_ARRAY_COUNT(iAttrs);
GLint msaaIAttrs[kIAttrsCount + 6];
memcpy(msaaIAttrs, iAttrs, sizeof(GLint) * kIAttrsCount);
SkASSERT(0 == msaaIAttrs[kIAttrsCount - 2] &&
0 == msaaIAttrs[kIAttrsCount - 1]);
msaaIAttrs[kIAttrsCount - 2] = SK_WGL_SAMPLE_BUFFERS;
msaaIAttrs[kIAttrsCount - 1] = TRUE;
msaaIAttrs[kIAttrsCount + 0] = SK_WGL_SAMPLES;
msaaIAttrs[kIAttrsCount + 1] = msaaSampleCount;
if (extensions.hasExtension(dc, "WGL_NV_multisample_coverage")) {
msaaIAttrs[kIAttrsCount + 2] = SK_WGL_COLOR_SAMPLES;
// We want the fewest number of color samples possible.
// Passing 0 gives only the formats where all samples are color
// samples.
msaaIAttrs[kIAttrsCount + 3] = 1;
msaaIAttrs[kIAttrsCount + 4] = 0;
msaaIAttrs[kIAttrsCount + 5] = 0;
} else {
msaaIAttrs[kIAttrsCount + 2] = 0;
msaaIAttrs[kIAttrsCount + 3] = 0;
}
GLuint num;
int formats[64];
extensions.choosePixelFormat(dc, msaaIAttrs, fAttrs, 64, formats, &num);
num = min(num,64);
int formatToTry = extensions.selectFormat(formats,
num,
dc,
msaaSampleCount);
DescribePixelFormat(dc, formatToTry, sizeof(pfd), &pfd);
if (SetPixelFormat(dc, formatToTry, &pfd)) {
format = formatToTry;
}
}
if (0 == format) {
GLuint num;
extensions.choosePixelFormat(dc, iAttrs, fAttrs, 1, &format, &num);
DescribePixelFormat(dc, format, sizeof(pfd), &pfd);
BOOL set = SetPixelFormat(dc, format, &pfd);
SkASSERT(TRUE == set);
}
HGLRC glrc = wglCreateContext(dc);
SkASSERT(glrc);
wglMakeCurrent(prevDC, prevGLRC);
return glrc;
}
bool SkOSWindow::attachGL(int msaaSampleCount) {
if (NULL == fHGLRC) {
fHGLRC = create_gl((HWND)fHWND, msaaSampleCount);
if (NULL == fHGLRC) {
return false;
}
glClearStencil(0);
glClearColor(0, 0, 0, 0);
glStencilMask(0xffffffff);
glClear(GL_STENCIL_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
}
if (wglMakeCurrent(GetDC((HWND)fHWND), (HGLRC)fHGLRC)) {
glViewport(0, 0, SkScalarRound(this->width()),
SkScalarRound(this->height()));
return true;
}
return false;
}
void SkOSWindow::detachGL() {
wglMakeCurrent(GetDC((HWND)fHWND), 0);
wglDeleteContext((HGLRC)fHGLRC);
fHGLRC = NULL;
}
void SkOSWindow::presentGL() {
glFlush();
SwapBuffers(GetDC((HWND)fHWND));
}
#if SK_ANGLE
bool create_ANGLE(EGLNativeWindowType hWnd,
int msaaSampleCount,
EGLDisplay* eglDisplay,
EGLContext* eglContext,
EGLSurface* eglSurface) {
static const EGLint contextAttribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE, EGL_NONE
};
static const EGLint configAttribList[] = {
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_DEPTH_SIZE, 8,
EGL_STENCIL_SIZE, 8,
EGL_NONE
};
static const EGLint surfaceAttribList[] = {
EGL_NONE, EGL_NONE
};
EGLDisplay display = eglGetDisplay(GetDC(hWnd));
if (display == EGL_NO_DISPLAY ) {
return false;
}
// Initialize EGL
EGLint majorVersion, minorVersion;
if (!eglInitialize(display, &majorVersion, &minorVersion)) {
return false;
}
EGLint numConfigs;
if (!eglGetConfigs(display, NULL, 0, &numConfigs)) {
return false;
}
// Choose config
EGLConfig config;
bool foundConfig = false;
if (msaaSampleCount) {
static const int kConfigAttribListCnt =
SK_ARRAY_COUNT(configAttribList);
EGLint msaaConfigAttribList[kConfigAttribListCnt + 4];
memcpy(msaaConfigAttribList,
configAttribList,
sizeof(configAttribList));
SkASSERT(EGL_NONE == msaaConfigAttribList[kConfigAttribListCnt - 1]);
msaaConfigAttribList[kConfigAttribListCnt - 1] = EGL_SAMPLE_BUFFERS;
msaaConfigAttribList[kConfigAttribListCnt + 0] = 1;
msaaConfigAttribList[kConfigAttribListCnt + 1] = EGL_SAMPLES;
msaaConfigAttribList[kConfigAttribListCnt + 2] = msaaSampleCount;
msaaConfigAttribList[kConfigAttribListCnt + 3] = EGL_NONE;
if (eglChooseConfig(display, configAttribList,
&config, 1, &numConfigs)) {
SkASSERT(numConfigs > 0);
foundConfig = true;
}
}
if (!foundConfig) {
if (!eglChooseConfig(display, configAttribList,
&config, 1, &numConfigs)) {
return false;
}
}
// Create a surface
EGLSurface surface = eglCreateWindowSurface(display, config,
(EGLNativeWindowType)hWnd,
surfaceAttribList);
if (surface == EGL_NO_SURFACE) {
return false;
}
// Create a GL context
EGLContext context = eglCreateContext(display, config,
EGL_NO_CONTEXT,
contextAttribs );
if (context == EGL_NO_CONTEXT ) {
return false;
}
// Make the context current
if (!eglMakeCurrent(display, surface, surface, context)) {
return false;
}
*eglDisplay = display;
*eglContext = context;
*eglSurface = surface;
return true;
}
bool SkOSWindow::attachANGLE(int msaaSampleCount) {
if (EGL_NO_DISPLAY == fDisplay) {
bool bResult = create_ANGLE((HWND)fHWND,
msaaSampleCount,
&fDisplay,
&fContext,
&fSurface);
if (false == bResult) {
return false;
}
const GrGLInterface* intf = GrGLCreateANGLEInterface();
if (intf) {
ANGLE_GL_CALL(intf, ClearStencil(0));
ANGLE_GL_CALL(intf, ClearColor(0, 0, 0, 0));
ANGLE_GL_CALL(intf, StencilMask(0xffffffff));
ANGLE_GL_CALL(intf, Clear(GL_STENCIL_BUFFER_BIT |GL_COLOR_BUFFER_BIT));
}
}
if (eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
const GrGLInterface* intf = GrGLCreateANGLEInterface();
if (intf ) {
ANGLE_GL_CALL(intf, Viewport(0, 0, SkScalarRound(this->width()),
SkScalarRound(this->height())));
}
return true;
}
return false;
}
void SkOSWindow::detachANGLE() {
eglMakeCurrent(fDisplay, EGL_NO_SURFACE , EGL_NO_SURFACE , EGL_NO_CONTEXT);
eglDestroyContext(fDisplay, fContext);
fContext = EGL_NO_CONTEXT;
eglDestroySurface(fDisplay, fSurface);
fSurface = EGL_NO_SURFACE;
eglTerminate(fDisplay);
fDisplay = EGL_NO_DISPLAY;
}
void SkOSWindow::presentANGLE() {
const GrGLInterface* intf = GrGLCreateANGLEInterface();
if (intf) {
ANGLE_GL_CALL(intf, Flush());
}
eglSwapBuffers(fDisplay, fSurface);
}
#endif // SK_ANGLE
#endif // SK_SUPPORT_GPU
// return true on success
bool SkOSWindow::attach(SkBackEndTypes attachType, int msaaSampleCount) {
// attach doubles as "windowResize" so we need to allo
// already bound states to pass through again
// TODO: split out the resize functionality
// SkASSERT(kNone_BackEndType == fAttached);
bool result = true;
switch (attachType) {
case kNone_BackEndType:
// nothing to do
break;
#if SK_SUPPORT_GPU
case kNativeGL_BackEndType:
result = attachGL(msaaSampleCount);
break;
#if SK_ANGLE
case kANGLE_BackEndType:
result = attachANGLE(msaaSampleCount);
break;
#endif // SK_ANGLE
#endif // SK_SUPPORT_GPU
default:
SkASSERT(false);
result = false;
break;
}
if (result) {
fAttached = attachType;
}
return result;
}
void SkOSWindow::detach() {
switch (fAttached) {
case kNone_BackEndType:
// nothing to do
break;
#if SK_SUPPORT_GPU
case kNativeGL_BackEndType:
detachGL();
break;
#if SK_ANGLE
case kANGLE_BackEndType:
detachANGLE();
break;
#endif // SK_ANGLE
#endif // SK_SUPPORT_GPU
default:
SkASSERT(false);
break;
}
fAttached = kNone_BackEndType;
}
void SkOSWindow::present() {
switch (fAttached) {
case kNone_BackEndType:
// nothing to do
return;
#if SK_SUPPORT_GPU
case kNativeGL_BackEndType:
presentGL();
break;
#if SK_ANGLE
case kANGLE_BackEndType:
presentANGLE();
break;
#endif // SK_ANGLE
#endif // SK_SUPPORT_GPU
default:
SkASSERT(false);
break;
}
}
#endif
|