Index: app/gfx/canvas.h |
=================================================================== |
--- app/gfx/canvas.h (revision 42303) |
+++ app/gfx/canvas.h (working copy) |
@@ -1,238 +0,0 @@ |
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#ifndef APP_GFX_CANVAS_H_ |
-#define APP_GFX_CANVAS_H_ |
- |
-#if defined(OS_WIN) |
-#include <windows.h> |
-#endif |
- |
-#include <string> |
- |
-#include "base/basictypes.h" |
-#include "skia/ext/platform_canvas.h" |
- |
-#if defined(OS_POSIX) && !defined(OS_MACOSX) |
-typedef struct _cairo cairo_t; |
-typedef struct _GdkPixbuf GdkPixbuf; |
-#endif |
- |
-namespace gfx { |
- |
-class Font; |
-class Rect; |
- |
-// Canvas is a SkCanvas subclass that provides a number of methods for common |
-// operations used throughout an application built using base/gfx and app/gfx. |
-// |
-// All methods that take integer arguments (as is used throughout views) |
-// end with Int. If you need to use methods provided by the superclass |
-// you'll need to do a conversion. In particular you'll need to use |
-// macro SkIntToScalar(xxx), or if converting from a scalar to an integer |
-// SkScalarRound. |
-// |
-// A handful of methods in this class are overloaded providing an additional |
-// argument of type SkXfermode::Mode. SkXfermode::Mode specifies how the |
-// source and destination colors are combined. Unless otherwise specified, |
-// the variant that does not take a SkXfermode::Mode uses a transfer mode |
-// of kSrcOver_Mode. |
-class Canvas : public skia::PlatformCanvas { |
- public: |
- // Specifies the alignment for text rendered with the DrawStringInt method. |
- enum { |
- TEXT_ALIGN_LEFT = 1, |
- TEXT_ALIGN_CENTER = 2, |
- TEXT_ALIGN_RIGHT = 4, |
- TEXT_VALIGN_TOP = 8, |
- TEXT_VALIGN_MIDDLE = 16, |
- TEXT_VALIGN_BOTTOM = 32, |
- |
- // Specifies the text consists of multiple lines. |
- MULTI_LINE = 64, |
- |
- // By default DrawStringInt does not process the prefix ('&') character |
- // specially. That is, the string "&foo" is rendered as "&foo". When |
- // rendering text from a resource that uses the prefix character for |
- // mnemonics, the prefix should be processed and can be rendered as an |
- // underline (SHOW_PREFIX), or not rendered at all (HIDE_PREFIX). |
- SHOW_PREFIX = 128, |
- HIDE_PREFIX = 256, |
- |
- // Prevent ellipsizing |
- NO_ELLIPSIS = 512, |
- |
- // Specifies if words can be split by new lines. |
- // This only works with MULTI_LINE. |
- CHARACTER_BREAK = 1024, |
- |
- // Instructs DrawStringInt() to render the text using RTL directionality. |
- // In most cases, passing this flag is not necessary because information |
- // about the text directionality is going to be embedded within the string |
- // in the form of special Unicode characters. However, we don't insert |
- // directionality characters into strings if the locale is LTR because some |
- // platforms (for example, an English Windows XP with no RTL fonts |
- // installed) don't support these characters. Thus, this flag should be |
- // used to render text using RTL directionality when the locale is LTR. |
- FORCE_RTL_DIRECTIONALITY = 2048, |
- }; |
- |
- // Creates an empty Canvas. Callers must use initialize before using the |
- // canvas. |
- Canvas(); |
- |
- Canvas(int width, int height, bool is_opaque); |
- |
- virtual ~Canvas(); |
- |
- // Retrieves the clip rectangle and sets it in the specified rectangle if any. |
- // Returns true if the clip rect is non-empty. |
- bool GetClipRect(gfx::Rect* clip_rect); |
- |
- // Wrapper function that takes integer arguments. |
- // Returns true if the clip is non-empty. |
- // See clipRect for specifics. |
- bool ClipRectInt(int x, int y, int w, int h); |
- |
- // Test whether the provided rectangle intersects the current clip rect. |
- bool IntersectsClipRectInt(int x, int y, int w, int h); |
- |
- // Wrapper function that takes integer arguments. |
- // See translate() for specifics. |
- void TranslateInt(int x, int y); |
- |
- // Wrapper function that takes integer arguments. |
- // See scale() for specifics. |
- void ScaleInt(int x, int y); |
- |
- // Fills the given rectangle with the given paint's parameters. |
- void FillRectInt(int x, int y, int w, int h, const SkPaint& paint); |
- |
- // Fills the specified region with the specified color using a transfer |
- // mode of SkXfermode::kSrcOver_Mode. |
- void FillRectInt(const SkColor& color, int x, int y, int w, int h); |
- |
- // Draws a single pixel rect in the specified region with the specified |
- // color, using a transfer mode of SkXfermode::kSrcOver_Mode. |
- // |
- // NOTE: if you need a single pixel line, use DraLineInt. |
- void DrawRectInt(const SkColor& color, int x, int y, int w, int h); |
- |
- // Draws a single pixel rect in the specified region with the specified |
- // color and transfer mode. |
- // |
- // NOTE: if you need a single pixel line, use DraLineInt. |
- void DrawRectInt(const SkColor& color, int x, int y, int w, int h, |
- SkXfermode::Mode mode); |
- |
- // Draws a single pixel line with the specified color. |
- void DrawLineInt(const SkColor& color, int x1, int y1, int x2, int y2); |
- |
- // Draws a bitmap with the origin at the specified location. The upper left |
- // corner of the bitmap is rendered at the specified location. |
- void DrawBitmapInt(const SkBitmap& bitmap, int x, int y); |
- |
- // Draws a bitmap with the origin at the specified location, using the |
- // specified paint. The upper left corner of the bitmap is rendered at the |
- // specified location. |
- void DrawBitmapInt(const SkBitmap& bitmap, int x, int y, |
- const SkPaint& paint); |
- |
- // Draws a portion of a bitmap in the specified location. The src parameters |
- // correspond to the region of the bitmap to draw in the region defined |
- // by the dest coordinates. |
- // |
- // If the width or height of the source differs from that of the destination, |
- // the bitmap will be scaled. When scaling down, it is highly recommended |
- // that you call buildMipMap(false) on your bitmap to ensure that it has |
- // a mipmap, which will result in much higher-quality output. Set |filter| |
- // to use filtering for bitmaps, otherwise the nearest-neighbor algorithm |
- // is used for resampling. |
- // |
- // An optional custom SkPaint can be provided. |
- void DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y, int src_w, |
- int src_h, int dest_x, int dest_y, int dest_w, int dest_h, |
- bool filter); |
- void DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y, int src_w, |
- int src_h, int dest_x, int dest_y, int dest_w, int dest_h, |
- bool filter, const SkPaint& paint); |
- |
- // Draws text with the specified color, font and location. The text is |
- // aligned to the left, vertically centered, clipped to the region. If the |
- // text is too big, it is truncated and '...' is added to the end. |
- void DrawStringInt(const std::wstring& text, const gfx::Font& font, |
- const SkColor& color, int x, int y, int w, int h); |
- void DrawStringInt(const std::wstring& text, const gfx::Font& font, |
- const SkColor& color, const gfx::Rect& display_rect); |
- |
- // Draws text with the specified color, font and location. The last argument |
- // specifies flags for how the text should be rendered. It can be one of |
- // TEXT_ALIGN_CENTER, TEXT_ALIGN_RIGHT or TEXT_ALIGN_LEFT. |
- void DrawStringInt(const std::wstring& text, const gfx::Font& font, |
- const SkColor& color, int x, int y, int w, int h, |
- int flags); |
- |
-#ifdef OS_WIN // Only implemented on Windows for now. |
- // Draws text with a 1-pixel halo around it of the given color. It allows |
- // ClearType to be drawn to an otherwise transparenct bitmap for drag images. |
- // Drag images have only 1-bit of transparency, so we don't do any fancy |
- // blurring. |
- void DrawStringWithHalo(const std::wstring& text, const gfx::Font& font, |
- const SkColor& text_color, const SkColor& halo_color, |
- int x, int y, int w, int h, int flags); |
-#endif |
- |
- // Draws a dotted gray rectangle used for focus purposes. |
- void DrawFocusRect(int x, int y, int width, int height); |
- |
- // Tiles the image in the specified region. |
- void TileImageInt(const SkBitmap& bitmap, int x, int y, int w, int h); |
- void TileImageInt(const SkBitmap& bitmap, int src_x, int src_y, |
- int dest_x, int dest_y, int w, int h); |
- |
- // Extracts a bitmap from the contents of this canvas. |
- SkBitmap ExtractBitmap() const; |
- |
-#if defined(OS_POSIX) && !defined(OS_MACOSX) |
- // Applies current matrix on the canvas to the cairo context. This should be |
- // invoked anytime you plan on drawing directly to the cairo context. Be |
- // sure and set the matrix back to the identity when done. |
- void ApplySkiaMatrixToCairoContext(cairo_t* cr); |
- |
- // Draw the pixbuf in its natural size at (x, y). |
- void DrawGdkPixbuf(GdkPixbuf* pixbuf, int x, int y); |
-#endif |
- |
- // Compute the size required to draw some text with the provided font. |
- // Attempts to fit the text with the provided width and height. Increases |
- // height and then width as needed to make the text fit. This method |
- // supports multiple lines. |
- static void SizeStringInt(const std::wstring& test, const gfx::Font& font, |
- int *width, int* height, int flags); |
- |
- // Returns the default text alignment to be used when drawing text on a |
- // gfx::Canvas based on the directionality of the system locale language. This |
- // function is used by gfx::Canvas::DrawStringInt when the text alignment is |
- // not specified. |
- // |
- // This function returns either gfx::Canvas::TEXT_ALIGN_LEFT or |
- // gfx::Canvas::TEXT_ALIGN_RIGHT. |
- static int DefaultCanvasTextAlignment(); |
- |
- private: |
-#if defined(OS_WIN) |
- // Draws text with the specified color, font and location. The text is |
- // aligned to the left, vertically centered, clipped to the region. If the |
- // text is too big, it is truncated and '...' is added to the end. |
- void DrawStringInt(const std::wstring& text, HFONT font, |
- const SkColor& color, int x, int y, int w, int h, |
- int flags); |
-#endif |
- |
- DISALLOW_COPY_AND_ASSIGN(Canvas); |
-}; |
- |
-} // namespace gfx; |
- |
-#endif // APP_GFX_CANVAS_H_ |