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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "skia/ext/bitmap_platform_device_mac.h" | 5 #include "skia/ext/bitmap_platform_device_mac.h" |
| 6 | 6 |
| 7 #import <ApplicationServices/ApplicationServices.h> | 7 #import <ApplicationServices/ApplicationServices.h> |
| 8 #include <time.h> | 8 #include <time.h> |
| 9 | 9 |
| 10 #include "base/mac/mac_util.h" | 10 #include "base/mac/mac_util.h" |
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| 92 // Our coordinate system is flipped to match WebKit's so we need to modify | 92 // Our coordinate system is flipped to match WebKit's so we need to modify |
| 93 // the xform to match that. | 93 // the xform to match that. |
| 94 SkMatrix transformed_matrix = matrix; | 94 SkMatrix transformed_matrix = matrix; |
| 95 SkScalar sy = -matrix.getScaleY(); | 95 SkScalar sy = -matrix.getScaleY(); |
| 96 transformed_matrix.setScaleY(sy); | 96 transformed_matrix.setScaleY(sy); |
| 97 size_t height = CGBitmapContextGetHeight(context); | 97 size_t height = CGBitmapContextGetHeight(context); |
| 98 SkScalar ty = -matrix.getTranslateY(); // y axis is flipped. | 98 SkScalar ty = -matrix.getTranslateY(); // y axis is flipped. |
| 99 transformed_matrix.setTranslateY(ty + (SkScalar)height); | 99 transformed_matrix.setTranslateY(ty + (SkScalar)height); |
| 100 | 100 |
| 101 CGAffineTransform cg_matrix = | 101 CGAffineTransform cg_matrix = |
| 102 gfx::SkMatrixToCGAffineTransform(transformed_matrix); | 102 skia::SkMatrixToCGAffineTransform(transformed_matrix); |
| 103 | 103 |
| 104 // Load final transform into context. | 104 // Load final transform into context. |
| 105 CGContextConcatCTM(context, cg_matrix); | 105 CGContextConcatCTM(context, cg_matrix); |
| 106 } | 106 } |
| 107 | 107 |
| 108 // Loads a SkRegion into the CG context. | 108 // Loads a SkRegion into the CG context. |
| 109 static void LoadClippingRegionToCGContext(CGContextRef context, | 109 static void LoadClippingRegionToCGContext(CGContextRef context, |
| 110 const SkRegion& region, | 110 const SkRegion& region, |
| 111 const SkMatrix& transformation) { | 111 const SkMatrix& transformation) { |
| 112 if (region.isEmpty()) { | 112 if (region.isEmpty()) { |
| 113 // region can be empty, in which case everything will be clipped. | 113 // region can be empty, in which case everything will be clipped. |
| 114 SkRect rect; | 114 SkRect rect; |
| 115 rect.setEmpty(); | 115 rect.setEmpty(); |
| 116 CGContextClipToRect(context, gfx::SkRectToCGRect(rect)); | 116 CGContextClipToRect(context, skia::SkRectToCGRect(rect)); |
| 117 } else if (region.isRect()) { | 117 } else if (region.isRect()) { |
| 118 // CoreGraphics applies the current transform to clip rects, which is | 118 // CoreGraphics applies the current transform to clip rects, which is |
| 119 // unwanted. Inverse-transform the rect before sending it to CG. This only | 119 // unwanted. Inverse-transform the rect before sending it to CG. This only |
| 120 // works for translations and scaling, but not for rotations (but the | 120 // works for translations and scaling, but not for rotations (but the |
| 121 // viewport is never rotated anyway). | 121 // viewport is never rotated anyway). |
| 122 SkMatrix t; | 122 SkMatrix t; |
| 123 bool did_invert = transformation.invert(&t); | 123 bool did_invert = transformation.invert(&t); |
| 124 if (!did_invert) | 124 if (!did_invert) |
| 125 t.reset(); | 125 t.reset(); |
| 126 // Do the transformation. | 126 // Do the transformation. |
| 127 SkRect rect; | 127 SkRect rect; |
| 128 rect.set(region.getBounds()); | 128 rect.set(region.getBounds()); |
| 129 t.mapRect(&rect); | 129 t.mapRect(&rect); |
| 130 SkIRect irect; | 130 SkIRect irect; |
| 131 rect.round(&irect); | 131 rect.round(&irect); |
| 132 CGContextClipToRect(context, gfx::SkIRectToCGRect(irect)); | 132 CGContextClipToRect(context, skia::SkIRectToCGRect(irect)); |
| 133 } else { | 133 } else { |
| 134 // It is complex. | 134 // It is complex. |
| 135 SkPath path; | 135 SkPath path; |
| 136 region.getBoundaryPath(&path); | 136 region.getBoundaryPath(&path); |
| 137 // Clip. Note that windows clipping regions are not affected by the | 137 // Clip. Note that windows clipping regions are not affected by the |
| 138 // transform so apply it manually. | 138 // transform so apply it manually. |
| 139 path.transform(transformation); | 139 path.transform(transformation); |
| 140 // TODO(playmobil): Implement. | 140 // TODO(playmobil): Implement. |
| 141 SkASSERT(false); | 141 SkASSERT(false); |
| 142 // LoadPathToDC(context, path); | 142 // LoadPathToDC(context, path); |
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| 292 } | 292 } |
| 293 | 293 |
| 294 SkCanvas* CreatePlatformCanvas(int width, int height, bool is_opaque, | 294 SkCanvas* CreatePlatformCanvas(int width, int height, bool is_opaque, |
| 295 uint8_t* data, OnFailureType failureType) { | 295 uint8_t* data, OnFailureType failureType) { |
| 296 skia::RefPtr<SkBaseDevice> dev = skia::AdoptRef( | 296 skia::RefPtr<SkBaseDevice> dev = skia::AdoptRef( |
| 297 BitmapPlatformDevice::CreateWithData(data, width, height, is_opaque)); | 297 BitmapPlatformDevice::CreateWithData(data, width, height, is_opaque)); |
| 298 return CreateCanvas(dev, failureType); | 298 return CreateCanvas(dev, failureType); |
| 299 } | 299 } |
| 300 | 300 |
| 301 } // namespace skia | 301 } // namespace skia |
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