gfx/thebes/gfxQtNativeRenderer.h@97036ab72558 (annotated)
gfx/thebes/gfxQtNativeRenderer.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef GFXQTNATIVERENDER_H_ |
| michael@0 | 7 | #define GFXQTNATIVERENDER_H_ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "gfxColor.h" |
| michael@0 | 10 | #include "gfxContext.h" |
| michael@0 | 11 | #include "gfxXlibSurface.h" |
| michael@0 | 12 | |
| michael@0 | 13 | class QRect; |
| michael@0 | 14 | struct nsIntRect; |
| michael@0 | 15 | |
| michael@0 | 16 | /** |
| michael@0 | 17 | * This class lets us take code that draws into an Xlib surface drawable and lets us |
| michael@0 | 18 | * use it to draw into any Thebes context. The user should subclass this class, |
| michael@0 | 19 | * override NativeDraw, and then call Draw(). The drawing will be subjected |
| michael@0 | 20 | * to all Thebes transformations, clipping etc. |
| michael@0 | 21 | */ |
| michael@0 | 22 | class gfxQtNativeRenderer { |
| michael@0 | 23 | public: |
| michael@0 | 24 | /** |
| michael@0 | 25 | * Perform the native drawing. |
| michael@0 | 26 | * @param offsetX draw at this offset into the given drawable |
| michael@0 | 27 | * @param offsetY draw at this offset into the given drawable |
| michael@0 | 28 | * @param clipRects an array of rects; clip to the union |
| michael@0 | 29 | * @param numClipRects the number of rects in the array, or zero if |
| michael@0 | 30 | * no clipping is required |
| michael@0 | 31 | */ |
| michael@0 | 32 | virtual nsresult DrawWithXlib(cairo_surface_t* surface, |
| michael@0 | 33 | nsIntPoint offset, |
| michael@0 | 34 | nsIntRect* clipRects, uint32_t numClipRects) = 0; |
| michael@0 | 35 | |
| michael@0 | 36 | enum { |
| michael@0 | 37 | // If set, then Draw() is opaque, i.e., every pixel in the intersection |
| michael@0 | 38 | // of the clipRect and (offset.x,offset.y,bounds.width,bounds.height) |
| michael@0 | 39 | // will be set and there is no dependence on what the existing pixels |
| michael@0 | 40 | // in the drawable are set to. |
| michael@0 | 41 | DRAW_IS_OPAQUE = 0x01, |
| michael@0 | 42 | // If set, then numClipRects can be zero or one |
| michael@0 | 43 | DRAW_SUPPORTS_CLIP_RECT = 0x04, |
| michael@0 | 44 | // If set, then numClipRects can be any value. If neither this |
| michael@0 | 45 | // nor CLIP_RECT are set, then numClipRects will be zero |
| michael@0 | 46 | DRAW_SUPPORTS_CLIP_LIST = 0x08, |
| michael@0 | 47 | // If set, then the visual passed in can be any visual, otherwise the |
| michael@0 | 48 | // visual passed in must be the default visual for dpy's default screen |
| michael@0 | 49 | DRAW_SUPPORTS_ALTERNATE_VISUAL = 0x10, |
| michael@0 | 50 | // If set, then the Screen 'screen' in the callback can be different |
| michael@0 | 51 | // from the default Screen of the display passed to 'Draw' and can be |
| michael@0 | 52 | // on a different display. |
| michael@0 | 53 | DRAW_SUPPORTS_ALTERNATE_SCREEN = 0x20 |
| michael@0 | 54 | }; |
| michael@0 | 55 | |
| michael@0 | 56 | /** |
| michael@0 | 57 | * @param flags see above |
| michael@0 | 58 | * @param size Draw()'s drawing is guaranteed to be restricted to |
| michael@0 | 59 | * the rectangle (offset.x,offset.y,size.width,size.height) |
| michael@0 | 60 | * @param dpy a display to use for the drawing if ctx doesn't have one |
| michael@0 | 61 | * @param resultSurface if non-null, we will try to capture a copy of the |
| michael@0 | 62 | * rendered image into a surface similar to the surface of ctx; if |
| michael@0 | 63 | * successful, a pointer to the new gfxASurface is stored in *resultSurface, |
| michael@0 | 64 | * otherwise *resultSurface is set to nullptr. |
| michael@0 | 65 | */ |
| michael@0 | 66 | nsresult Draw(gfxContext* ctx, nsIntSize size, |
| michael@0 | 67 | uint32_t flags, Screen* screen, Visual* visual); |
| michael@0 | 68 | }; |
| michael@0 | 69 | |
| michael@0 | 70 | #endif /*GFXQTNATIVERENDER_H_*/ |
