1 /*
2 * Copyright (C) 2007 Apple Computer, Kevin Ollivier. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "Image.h"
28
29 #include "AffineTransform.h"
30 #include "BitmapImage.h"
31 #include "FloatConversion.h"
32 #include "FloatRect.h"
33 #include "GraphicsContext.h"
34 #include "ImageObserver.h"
35 #include "NotImplemented.h"
36 #include "SharedBuffer.h"
37
38 #include <math.h>
39 #include <stdio.h>
40
41 #include <wx/defs.h>
42 #include <wx/bitmap.h>
43 #include <wx/dc.h>
44 #include <wx/dcmemory.h>
45 #include <wx/dcgraph.h>
46 #include <wx/graphics.h>
47 #include <wx/image.h>
48 #include <wx/thread.h>
49
50 namespace WebCore {
51
52 // this is in GraphicsContextWx.cpp
53 int getWxCompositingOperation(CompositeOperator op, bool hasAlpha);
54
clear(bool clearMetadata)55 bool FrameData::clear(bool clearMetadata)
56 {
57 if (clearMetadata)
58 m_haveMetadata = false;
59
60 if (m_frame) {
61 delete m_frame;
62 m_frame = 0;
63 return true;
64 }
65 return false;
66 }
67
68 // ================================================
69 // Image Class
70 // ================================================
71
loadPlatformResource(const char * name)72 PassRefPtr<Image> Image::loadPlatformResource(const char *name)
73 {
74 // FIXME: We need to have some 'placeholder' graphics for things like missing
75 // plugins or broken images.
76 Vector<char> arr;
77 RefPtr<Image> img = BitmapImage::create();
78 RefPtr<SharedBuffer> buffer = SharedBuffer::create(arr.data(), arr.size());
79 img->setData(buffer, true);
80 return img.release();
81 }
82
initPlatformData()83 void BitmapImage::initPlatformData()
84 {
85 // FIXME: NYI
86 }
87
88 // Drawing Routines
89
draw(GraphicsContext * ctxt,const FloatRect & dst,const FloatRect & src,ColorSpace styleColorSpace,CompositeOperator op)90 void BitmapImage::draw(GraphicsContext* ctxt, const FloatRect& dst, const FloatRect& src, ColorSpace styleColorSpace, CompositeOperator op)
91 {
92 if (!m_source.initialized())
93 return;
94
95 if (mayFillWithSolidColor()) {
96 fillWithSolidColor(ctxt, dst, solidColor(), styleColorSpace, op);
97 return;
98 }
99
100 #if USE(WXGC)
101 wxGCDC* context = (wxGCDC*)ctxt->platformContext();
102 wxGraphicsContext* gc = context->GetGraphicsContext();
103 wxGraphicsBitmap* bitmap = frameAtIndex(m_currentFrame);
104 #else
105 wxWindowDC* context = ctxt->platformContext();
106 wxBitmap* bitmap = frameAtIndex(m_currentFrame);
107 #endif
108
109 startAnimation();
110 if (!bitmap) // If it's too early we won't have an image yet.
111 return;
112
113 // If we're drawing a sub portion of the image or scaling then create
114 // a pattern transformation on the image and draw the transformed pattern.
115 // Test using example site at http://www.meyerweb.com/eric/css/edge/complexspiral/demo.html
116 // FIXME: NYI
117
118 ctxt->save();
119
120 // Set the compositing operation.
121 ctxt->setCompositeOperation(op);
122
123 #if USE(WXGC)
124 float scaleX = src.width() / dst.width();
125 float scaleY = src.height() / dst.height();
126
127 FloatRect adjustedDestRect = dst;
128 FloatSize selfSize = currentFrameSize();
129
130 if (src.size() != selfSize) {
131 adjustedDestRect.setLocation(FloatPoint(dst.x() - src.x() / scaleX, dst.y() - src.y() / scaleY));
132 adjustedDestRect.setSize(FloatSize(selfSize.width() / scaleX, selfSize.height() / scaleY));
133 }
134
135 gc->Clip(dst.x(), dst.y(), dst.width(), dst.height());
136 #if wxCHECK_VERSION(2,9,0)
137 gc->DrawBitmap(*bitmap, adjustedDestRect.x(), adjustedDestRect.y(), adjustedDestRect.width(), adjustedDestRect.height());
138 #else
139 gc->DrawGraphicsBitmap(*bitmap, adjustedDestRect.x(), adjustedDestRect.y(), adjustedDestRect.width(), adjustedDestRect.height());
140 #endif
141
142 #else // USE(WXGC)
143 IntRect srcIntRect(src);
144 IntRect dstIntRect(dst);
145 bool rescaling = false;
146 if ((dstIntRect.width() != srcIntRect.width()) || (dstIntRect.height() != srcIntRect.height()))
147 {
148 rescaling = true;
149 wxImage img = bitmap->ConvertToImage();
150 img.Rescale(dstIntRect.width(), dstIntRect.height());
151 bitmap = new wxBitmap(img);
152 }
153
154 wxMemoryDC mydc;
155 ASSERT(bitmap->GetRefData());
156 mydc.SelectObject(*bitmap);
157
158 context->Blit((wxCoord)dstIntRect.x(),(wxCoord)dstIntRect.y(), (wxCoord)dstIntRect.width(), (wxCoord)dstIntRect.height(), &mydc,
159 (wxCoord)srcIntRect.x(), (wxCoord)srcIntRect.y(), wxCOPY, true);
160 mydc.SelectObject(wxNullBitmap);
161
162 // NB: delete is causing crashes during page load, but not during the deletion
163 // itself. It occurs later on when a valid bitmap created in frameAtIndex
164 // suddenly becomes invalid after returning. It's possible these errors deal
165 // with reentrancy and threding problems.
166 //delete bitmap;
167 if (rescaling)
168 {
169 delete bitmap;
170 bitmap = NULL;
171 }
172 #endif
173
174 ctxt->restore();
175
176 if (ImageObserver* observer = imageObserver())
177 observer->didDraw(this);
178 }
179
drawPattern(GraphicsContext * ctxt,const FloatRect & srcRect,const AffineTransform & patternTransform,const FloatPoint & phase,ColorSpace,CompositeOperator,const FloatRect & dstRect)180 void Image::drawPattern(GraphicsContext* ctxt, const FloatRect& srcRect, const AffineTransform& patternTransform, const FloatPoint& phase, ColorSpace, CompositeOperator, const FloatRect& dstRect)
181 {
182
183
184 #if USE(WXGC)
185 wxGCDC* context = (wxGCDC*)ctxt->platformContext();
186 wxGraphicsBitmap* bitmap = nativeImageForCurrentFrame();
187 #else
188 wxWindowDC* context = ctxt->platformContext();
189 wxBitmap* bitmap = nativeImageForCurrentFrame();
190 #endif
191
192 if (!bitmap) // If it's too early we won't have an image yet.
193 return;
194
195 ctxt->save();
196 ctxt->clip(IntRect(dstRect.x(), dstRect.y(), dstRect.width(), dstRect.height()));
197
198 float currentW = 0;
199 float currentH = 0;
200
201 #if USE(WXGC)
202 wxGraphicsContext* gc = context->GetGraphicsContext();
203
204 float adjustedX = phase.x() + srcRect.x() *
205 narrowPrecisionToFloat(patternTransform.a());
206 float adjustedY = phase.y() + srcRect.y() *
207 narrowPrecisionToFloat(patternTransform.d());
208
209 gc->ConcatTransform(patternTransform);
210 #else
211 wxMemoryDC mydc;
212 mydc.SelectObject(*bitmap);
213 #endif
214
215 wxPoint origin(context->GetDeviceOrigin());
216 wxSize clientSize(context->GetSize());
217
218 while ( currentW < dstRect.width() && currentW < clientSize.x - origin.x ) {
219 while ( currentH < dstRect.height() && currentH < clientSize.y - origin.y) {
220 #if USE(WXGC)
221 #if wxCHECK_VERSION(2,9,0)
222 gc->DrawBitmap(*bitmap, adjustedX + currentW, adjustedY + currentH, (wxDouble)srcRect.width(), (wxDouble)srcRect.height());
223 #else
224 gc->DrawGraphicsBitmap(*bitmap, adjustedX + currentW, adjustedY + currentH, (wxDouble)srcRect.width(), (wxDouble)srcRect.height());
225 #endif
226 #else
227 context->Blit((wxCoord)dstRect.x() + currentW, (wxCoord)dstRect.y() + currentH,
228 (wxCoord)srcRect.width(), (wxCoord)srcRect.height(), &mydc,
229 (wxCoord)srcRect.x(), (wxCoord)srcRect.y(), wxCOPY, true);
230 #endif
231 currentH += srcRect.height();
232 }
233 currentW += srcRect.width();
234 currentH = 0;
235 }
236 ctxt->restore();
237
238 #if !USE(WXGC)
239 mydc.SelectObject(wxNullBitmap);
240 #endif
241
242 // NB: delete is causing crashes during page load, but not during the deletion
243 // itself. It occurs later on when a valid bitmap created in frameAtIndex
244 // suddenly becomes invalid after returning. It's possible these errors deal
245 // with reentrancy and threding problems.
246 //delete bitmap;
247
248 startAnimation();
249
250 if (ImageObserver* observer = imageObserver())
251 observer->didDraw(this);
252 }
253
checkForSolidColor()254 void BitmapImage::checkForSolidColor()
255 {
256 m_checkedForSolidColor = true;
257 }
258
invalidatePlatformData()259 void BitmapImage::invalidatePlatformData()
260 {
261
262 }
263
264 }
265