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
37 #include <math.h>
38 #include <stdio.h>
39
40 #include <wx/defs.h>
41 #include <wx/bitmap.h>
42 #include <wx/dc.h>
43 #include <wx/dcmemory.h>
44 #include <wx/dcgraph.h>
45 #include <wx/graphics.h>
46 #include <wx/image.h>
47 #include <wx/thread.h>
48
49 namespace WebCore {
50
51 // this is in GraphicsContextWx.cpp
52 int getWxCompositingOperation(CompositeOperator op, bool hasAlpha);
53
clear(bool clearMetadata)54 bool FrameData::clear(bool clearMetadata)
55 {
56 if (clearMetadata)
57 m_haveMetadata = false;
58
59 if (m_frame) {
60 delete m_frame;
61 m_frame = 0;
62 return true;
63 }
64 return false;
65 }
66
67 // ================================================
68 // Image Class
69 // ================================================
70
loadPlatformResource(const char * name)71 PassRefPtr<Image> Image::loadPlatformResource(const char *name)
72 {
73 // FIXME: We need to have some 'placeholder' graphics for things like missing
74 // plugins or broken images.
75 Vector<char> arr;
76 RefPtr<Image> img = BitmapImage::create();
77 RefPtr<SharedBuffer> buffer = SharedBuffer::create(arr.data(), arr.size());
78 img->setData(buffer, true);
79 return img.release();
80 }
81
initPlatformData()82 void BitmapImage::initPlatformData()
83 {
84 // FIXME: NYI
85 }
86
87 // Drawing Routines
88
draw(GraphicsContext * ctxt,const FloatRect & dst,const FloatRect & src,ColorSpace styleColorSpace,CompositeOperator op)89 void BitmapImage::draw(GraphicsContext* ctxt, const FloatRect& dst, const FloatRect& src, ColorSpace styleColorSpace, CompositeOperator op)
90 {
91 if (!m_source.initialized())
92 return;
93
94 if (mayFillWithSolidColor()) {
95 fillWithSolidColor(ctxt, dst, solidColor(), styleColorSpace, op);
96 return;
97 }
98
99 #if USE(WXGC)
100 wxGCDC* context = (wxGCDC*)ctxt->platformContext();
101 wxGraphicsContext* gc = context->GetGraphicsContext();
102 wxGraphicsBitmap* bitmap = frameAtIndex(m_currentFrame);
103 #else
104 wxWindowDC* context = ctxt->platformContext();
105 wxBitmap* bitmap = frameAtIndex(m_currentFrame);
106 #endif
107
108 startAnimation();
109 if (!bitmap) // If it's too early we won't have an image yet.
110 return;
111
112 // If we're drawing a sub portion of the image or scaling then create
113 // a pattern transformation on the image and draw the transformed pattern.
114 // Test using example site at http://www.meyerweb.com/eric/css/edge/complexspiral/demo.html
115 // FIXME: NYI
116
117 ctxt->save();
118
119 // Set the compositing operation.
120 ctxt->setCompositeOperation(op);
121
122 #if USE(WXGC)
123 float scaleX = src.width() / dst.width();
124 float scaleY = src.height() / dst.height();
125
126 FloatRect adjustedDestRect = dst;
127 FloatSize selfSize = currentFrameSize();
128
129 if (src.size() != selfSize) {
130 adjustedDestRect.setLocation(FloatPoint(dst.x() - src.x() / scaleX, dst.y() - src.y() / scaleY));
131 adjustedDestRect.setSize(FloatSize(selfSize.width() / scaleX, selfSize.height() / scaleY));
132 }
133
134 gc->Clip(dst.x(), dst.y(), dst.width(), dst.height());
135 #if wxCHECK_VERSION(2,9,0)
136 gc->DrawBitmap(*bitmap, adjustedDestRect.x(), adjustedDestRect.y(), adjustedDestRect.width(), adjustedDestRect.height());
137 #else
138 gc->DrawGraphicsBitmap(*bitmap, adjustedDestRect.x(), adjustedDestRect.y(), adjustedDestRect.width(), adjustedDestRect.height());
139 #endif
140
141 #else // USE(WXGC)
142 IntRect srcIntRect(src);
143 IntRect dstIntRect(dst);
144 bool rescaling = false;
145 if ((dstIntRect.width() != srcIntRect.width()) || (dstIntRect.height() != srcIntRect.height()))
146 {
147 rescaling = true;
148 wxImage img = bitmap->ConvertToImage();
149 img.Rescale(dstIntRect.width(), dstIntRect.height());
150 bitmap = new wxBitmap(img);
151 }
152
153 wxMemoryDC mydc;
154 ASSERT(bitmap->GetRefData());
155 mydc.SelectObject(*bitmap);
156
157 context->Blit((wxCoord)dstIntRect.x(),(wxCoord)dstIntRect.y(), (wxCoord)dstIntRect.width(), (wxCoord)dstIntRect.height(), &mydc,
158 (wxCoord)srcIntRect.x(), (wxCoord)srcIntRect.y(), wxCOPY, true);
159 mydc.SelectObject(wxNullBitmap);
160
161 // NB: delete is causing crashes during page load, but not during the deletion
162 // itself. It occurs later on when a valid bitmap created in frameAtIndex
163 // suddenly becomes invalid after returning. It's possible these errors deal
164 // with reentrancy and threding problems.
165 //delete bitmap;
166 if (rescaling)
167 {
168 delete bitmap;
169 bitmap = NULL;
170 }
171 #endif
172
173 ctxt->restore();
174
175 if (ImageObserver* observer = imageObserver())
176 observer->didDraw(this);
177 }
178
drawPattern(GraphicsContext * ctxt,const FloatRect & srcRect,const AffineTransform & patternTransform,const FloatPoint & phase,ColorSpace,CompositeOperator,const FloatRect & dstRect)179 void Image::drawPattern(GraphicsContext* ctxt, const FloatRect& srcRect, const AffineTransform& patternTransform, const FloatPoint& phase, ColorSpace, CompositeOperator, const FloatRect& dstRect)
180 {
181
182
183 #if USE(WXGC)
184 wxGCDC* context = (wxGCDC*)ctxt->platformContext();
185 wxGraphicsBitmap* bitmap = nativeImageForCurrentFrame();
186 #else
187 wxWindowDC* context = ctxt->platformContext();
188 wxBitmap* bitmap = nativeImageForCurrentFrame();
189 #endif
190
191 if (!bitmap) // If it's too early we won't have an image yet.
192 return;
193
194 ctxt->save();
195 ctxt->clip(IntRect(dstRect.x(), dstRect.y(), dstRect.width(), dstRect.height()));
196
197 float currentW = 0;
198 float currentH = 0;
199
200 #if USE(WXGC)
201 wxGraphicsContext* gc = context->GetGraphicsContext();
202
203 float adjustedX = phase.x() + srcRect.x() *
204 narrowPrecisionToFloat(patternTransform.a());
205 float adjustedY = phase.y() + srcRect.y() *
206 narrowPrecisionToFloat(patternTransform.d());
207
208 gc->ConcatTransform(patternTransform);
209 #else
210 wxMemoryDC mydc;
211 mydc.SelectObject(*bitmap);
212 #endif
213
214 wxPoint origin(context->GetDeviceOrigin());
215 wxSize clientSize(context->GetSize());
216
217 while ( currentW < dstRect.width() && currentW < clientSize.x - origin.x ) {
218 while ( currentH < dstRect.height() && currentH < clientSize.y - origin.y) {
219 #if USE(WXGC)
220 #if wxCHECK_VERSION(2,9,0)
221 gc->DrawBitmap(*bitmap, adjustedX + currentW, adjustedY + currentH, (wxDouble)srcRect.width(), (wxDouble)srcRect.height());
222 #else
223 gc->DrawGraphicsBitmap(*bitmap, adjustedX + currentW, adjustedY + currentH, (wxDouble)srcRect.width(), (wxDouble)srcRect.height());
224 #endif
225 #else
226 context->Blit((wxCoord)dstRect.x() + currentW, (wxCoord)dstRect.y() + currentH,
227 (wxCoord)srcRect.width(), (wxCoord)srcRect.height(), &mydc,
228 (wxCoord)srcRect.x(), (wxCoord)srcRect.y(), wxCOPY, true);
229 #endif
230 currentH += srcRect.height();
231 }
232 currentW += srcRect.width();
233 currentH = 0;
234 }
235 ctxt->restore();
236
237 #if !USE(WXGC)
238 mydc.SelectObject(wxNullBitmap);
239 #endif
240
241 // NB: delete is causing crashes during page load, but not during the deletion
242 // itself. It occurs later on when a valid bitmap created in frameAtIndex
243 // suddenly becomes invalid after returning. It's possible these errors deal
244 // with reentrancy and threding problems.
245 //delete bitmap;
246
247 startAnimation();
248
249 if (ImageObserver* observer = imageObserver())
250 observer->didDraw(this);
251 }
252
checkForSolidColor()253 void BitmapImage::checkForSolidColor()
254 {
255 m_checkedForSolidColor = true;
256 }
257
invalidatePlatformData()258 void BitmapImage::invalidatePlatformData()
259 {
260
261 }
262
263 }
264