The Tor Browser: gfx/thebes/gfxQuartzSurface.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "gfxQuartzSurface.h"

     7 #include "gfxContext.h"

     8 #include "gfxImageSurface.h"

    10 #include "cairo-quartz.h"

    12 void

    13 gfxQuartzSurface::MakeInvalid()

    14 {

    15     mSize = gfxIntSize(-1, -1);

    16 }

    18 gfxQuartzSurface::gfxQuartzSurface(const gfxSize& desiredSize, gfxImageFormat format,

    19                                    bool aForPrinting)

    20     : mCGContext(nullptr), mSize(desiredSize), mForPrinting(aForPrinting)

    21 {

    22     gfxIntSize size((unsigned int) floor(desiredSize.width),

    23                     (unsigned int) floor(desiredSize.height));

    24     if (!CheckSurfaceSize(size))

    25         MakeInvalid();

    27     unsigned int width = static_cast<unsigned int>(mSize.width);

    28     unsigned int height = static_cast<unsigned int>(mSize.height);

    30     cairo_surface_t *surf = cairo_quartz_surface_create

    31         ((cairo_format_t) format, width, height);

    33     mCGContext = cairo_quartz_surface_get_cg_context (surf);

    35     CGContextRetain(mCGContext);

    37     Init(surf);

    38     if (mSurfaceValid) {

    39       RecordMemoryUsed(mSize.height * 4 + sizeof(gfxQuartzSurface));

    40     }

    41 }

    43 gfxQuartzSurface::gfxQuartzSurface(CGContextRef context,

    44                                    const gfxSize& desiredSize,

    45                                    bool aForPrinting)

    46     : mCGContext(context), mSize(desiredSize), mForPrinting(aForPrinting)

    47 {

    48     gfxIntSize size((unsigned int) floor(desiredSize.width),

    49                     (unsigned int) floor(desiredSize.height));

    50     if (!CheckSurfaceSize(size))

    51         MakeInvalid();

    53     unsigned int width = static_cast<unsigned int>(mSize.width);

    54     unsigned int height = static_cast<unsigned int>(mSize.height);

    56     cairo_surface_t *surf =

    57         cairo_quartz_surface_create_for_cg_context(context,

    58                                                    width, height);

    60     CGContextRetain(mCGContext);

    62     Init(surf);

    63     if (mSurfaceValid) {

    64       RecordMemoryUsed(mSize.height * 4 + sizeof(gfxQuartzSurface));

    65     }

    66 }

    68 gfxQuartzSurface::gfxQuartzSurface(CGContextRef context,

    69                                    const gfxIntSize& size,

    70                                    bool aForPrinting)

    71     : mCGContext(context), mSize(size), mForPrinting(aForPrinting)

    72 {

    73     if (!CheckSurfaceSize(size))

    74         MakeInvalid();

    76     unsigned int width = static_cast<unsigned int>(mSize.width);

    77     unsigned int height = static_cast<unsigned int>(mSize.height);

    79     cairo_surface_t *surf =

    80         cairo_quartz_surface_create_for_cg_context(context,

    81                                                    width, height);

    83     CGContextRetain(mCGContext);

    85     Init(surf);

    86     if (mSurfaceValid) {

    87       RecordMemoryUsed(mSize.height * 4 + sizeof(gfxQuartzSurface));

    88     }

    89 }

    91 gfxQuartzSurface::gfxQuartzSurface(cairo_surface_t *csurf,

    92                                    const gfxIntSize& aSize,

    93                                    bool aForPrinting) :

    94     mSize(aSize), mForPrinting(aForPrinting)

    95 {

    96     mCGContext = cairo_quartz_surface_get_cg_context (csurf);

    97     CGContextRetain (mCGContext);

    99     Init(csurf, true);

   100 }

   102 gfxQuartzSurface::gfxQuartzSurface(unsigned char *data,

   103                                    const gfxSize& desiredSize,

   104                                    long stride,

   105                                    gfxImageFormat format,

   106                                    bool aForPrinting)

   107     : mCGContext(nullptr), mSize(desiredSize), mForPrinting(aForPrinting)

   108 {

   109     gfxIntSize size((unsigned int) floor(desiredSize.width),

   110                     (unsigned int) floor(desiredSize.height));

   111     if (!CheckSurfaceSize(size))

   112         MakeInvalid();

   114     unsigned int width = static_cast<unsigned int>(mSize.width);

   115     unsigned int height = static_cast<unsigned int>(mSize.height);

   117     cairo_surface_t *surf = cairo_quartz_surface_create_for_data

   118         (data, (cairo_format_t) format, width, height, stride);

   120     mCGContext = cairo_quartz_surface_get_cg_context (surf);

   122     CGContextRetain(mCGContext);

   124     Init(surf);

   125     if (mSurfaceValid) {

   126       RecordMemoryUsed(mSize.height * stride + sizeof(gfxQuartzSurface));

   127     }

   128 }

   130 gfxQuartzSurface::gfxQuartzSurface(unsigned char *data,

   131                                    const gfxIntSize& aSize,

   132                                    long stride,

   133                                    gfxImageFormat format,

   134                                    bool aForPrinting)

   135     : mCGContext(nullptr), mSize(aSize.width, aSize.height), mForPrinting(aForPrinting)

   136 {

   137     if (!CheckSurfaceSize(aSize))

   138         MakeInvalid();

   140     cairo_surface_t *surf = cairo_quartz_surface_create_for_data

   141         (data, (cairo_format_t) format, aSize.width, aSize.height, stride);

   143     mCGContext = cairo_quartz_surface_get_cg_context (surf);

   145     CGContextRetain(mCGContext);

   147     Init(surf);

   148     if (mSurfaceValid) {

   149       RecordMemoryUsed(mSize.height * stride + sizeof(gfxQuartzSurface));

   150     }

   151 }

   153 already_AddRefed<gfxASurface>

   154 gfxQuartzSurface::CreateSimilarSurface(gfxContentType aType,

   155                                        const gfxIntSize& aSize)

   156 {

   157     cairo_surface_t *surface =

   158         cairo_quartz_surface_create_cg_layer(mSurface, (cairo_content_t)aType,

   159                                              aSize.width, aSize.height);

   160     if (cairo_surface_status(surface)) {

   161         cairo_surface_destroy(surface);

   162         return nullptr;

   163     }

   165     nsRefPtr<gfxASurface> result = Wrap(surface, aSize);

   166     cairo_surface_destroy(surface);

   167     return result.forget();

   168 }

   170 CGContextRef

   171 gfxQuartzSurface::GetCGContextWithClip(gfxContext *ctx)

   172 {

   173 	return cairo_quartz_get_cg_context_with_clip(ctx->GetCairo());

   174 }

   176 int32_t gfxQuartzSurface::GetDefaultContextFlags() const

   177 {

   178     if (mForPrinting)

   179         return gfxContext::FLAG_DISABLE_SNAPPING |

   180                gfxContext::FLAG_DISABLE_COPY_BACKGROUND;

   182     return 0;

   183 }

   185 already_AddRefed<gfxImageSurface> gfxQuartzSurface::GetAsImageSurface()

   186 {

   187     cairo_surface_t *surface = cairo_quartz_surface_get_image(mSurface);

   188     if (!surface || cairo_surface_status(surface))

   189         return nullptr;

   191     nsRefPtr<gfxASurface> img = Wrap(surface);

   193     // cairo_quartz_surface_get_image returns a referenced image, and thebes

   194     // shares the refcounts of Cairo surfaces. However, Wrap also adds a

   195     // reference to the image. We need to remove one of these references

   196     // explicitly so we don't leak.

   197     img->Release();

   199     img->SetOpaqueRect(GetOpaqueRect());

   201     return img.forget().downcast<gfxImageSurface>();

   202 }

   204 gfxQuartzSurface::~gfxQuartzSurface()

   205 {

   206     CGContextRelease(mCGContext);

   207 }

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