| 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;
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| -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.
|
| -//
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| -// 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
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| -// 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,
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| -// the variant that does not take a SkXfermode::Mode uses a transfer mode
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| -// of kSrcOver_Mode.
|
| -class Canvas : public skia::PlatformCanvas {
|
| - public:
|
| - // Specifies the alignment for text rendered with the DrawStringInt method.
|
| - enum {
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| - TEXT_ALIGN_LEFT = 1,
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| - TEXT_ALIGN_CENTER = 2,
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| - TEXT_ALIGN_RIGHT = 4,
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| - TEXT_VALIGN_TOP = 8,
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| - TEXT_VALIGN_MIDDLE = 16,
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| - TEXT_VALIGN_BOTTOM = 32,
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| -
|
| - // Specifies the text consists of multiple lines.
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| - MULTI_LINE = 64,
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| -
|
| - // By default DrawStringInt does not process the prefix ('&') character
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| - // specially. That is, the string "&foo" is rendered as "&foo". When
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| - // rendering text from a resource that uses the prefix character for
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| - // mnemonics, the prefix should be processed and can be rendered as an
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| - // underline (SHOW_PREFIX), or not rendered at all (HIDE_PREFIX).
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| - SHOW_PREFIX = 128,
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| - HIDE_PREFIX = 256,
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| -
|
| - // Prevent ellipsizing
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| - NO_ELLIPSIS = 512,
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| -
|
| - // Specifies if words can be split by new lines.
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| - // This only works with MULTI_LINE.
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| - CHARACTER_BREAK = 1024,
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| -
|
| - // Instructs DrawStringInt() to render the text using RTL directionality.
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| - // In most cases, passing this flag is not necessary because information
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| - // about the text directionality is going to be embedded within the string
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| - // in the form of special Unicode characters. However, we don't insert
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| - // directionality characters into strings if the locale is LTR because some
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| - // platforms (for example, an English Windows XP with no RTL fonts
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| - // installed) don't support these characters. Thus, this flag should be
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| - // used to render text using RTL directionality when the locale is LTR.
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| - FORCE_RTL_DIRECTIONALITY = 2048,
|
| - };
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| -
|
| - // Creates an empty Canvas. Callers must use initialize before using the
|
| - // canvas.
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| - Canvas();
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| -
|
| - Canvas(int width, int height, bool is_opaque);
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| -
|
| - virtual ~Canvas();
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| -
|
| - // Retrieves the clip rectangle and sets it in the specified rectangle if any.
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| - // Returns true if the clip rect is non-empty.
|
| - bool GetClipRect(gfx::Rect* clip_rect);
|
| -
|
| - // Wrapper function that takes integer arguments.
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| - // Returns true if the clip is non-empty.
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| - // See clipRect for specifics.
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| - bool ClipRectInt(int x, int y, int w, int h);
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| -
|
| - // Test whether the provided rectangle intersects the current clip rect.
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| - bool IntersectsClipRectInt(int x, int y, int w, int h);
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| -
|
| - // Wrapper function that takes integer arguments.
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| - // See translate() for specifics.
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| - void TranslateInt(int x, int y);
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| -
|
| - // Wrapper function that takes integer arguments.
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| - // See scale() for specifics.
|
| - void ScaleInt(int x, int y);
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| -
|
| - // Fills the given rectangle with the given paint's parameters.
|
| - void FillRectInt(int x, int y, int w, int h, const SkPaint& paint);
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| -
|
| - // Fills the specified region with the specified color using a transfer
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| - // mode of SkXfermode::kSrcOver_Mode.
|
| - void FillRectInt(const SkColor& color, int x, int y, int w, int h);
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| -
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| - // Draws a single pixel rect in the specified region with the specified
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| - // color, using a transfer mode of SkXfermode::kSrcOver_Mode.
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| - //
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| - // NOTE: if you need a single pixel line, use DraLineInt.
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| - void DrawRectInt(const SkColor& color, int x, int y, int w, int h);
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| -
|
| - // Draws a single pixel rect in the specified region with the specified
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| - // color and transfer mode.
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| - //
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| - // NOTE: if you need a single pixel line, use DraLineInt.
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| - void DrawRectInt(const SkColor& color, int x, int y, int w, int h,
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| - SkXfermode::Mode mode);
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| -
|
| - // Draws a single pixel line with the specified color.
|
| - void DrawLineInt(const SkColor& color, int x1, int y1, int x2, int y2);
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| -
|
| - // Draws a bitmap with the origin at the specified location. The upper left
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| - // corner of the bitmap is rendered at the specified location.
|
| - void DrawBitmapInt(const SkBitmap& bitmap, int x, int y);
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| -
|
| - // Draws a bitmap with the origin at the specified location, using the
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| - // specified paint. The upper left corner of the bitmap is rendered at the
|
| - // specified location.
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| - void DrawBitmapInt(const SkBitmap& bitmap, int x, int y,
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| - const SkPaint& paint);
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| -
|
| - // Draws a portion of a bitmap in the specified location. The src parameters
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| - // correspond to the region of the bitmap to draw in the region defined
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| - // by the dest coordinates.
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| - //
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| - // If the width or height of the source differs from that of the destination,
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| - // the bitmap will be scaled. When scaling down, it is highly recommended
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| - // that you call buildMipMap(false) on your bitmap to ensure that it has
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| - // a mipmap, which will result in much higher-quality output. Set |filter|
|
| - // to use filtering for bitmaps, otherwise the nearest-neighbor algorithm
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| - // is used for resampling.
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| - //
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| - // An optional custom SkPaint can be provided.
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| - void DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y, int src_w,
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| - int src_h, int dest_x, int dest_y, int dest_w, int dest_h,
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| - bool filter);
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| - void DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y, int src_w,
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| - int src_h, int dest_x, int dest_y, int dest_w, int dest_h,
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| - bool filter, const SkPaint& paint);
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| -
|
| - // Draws text with the specified color, font and location. The text is
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| - // aligned to the left, vertically centered, clipped to the region. If the
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| - // text is too big, it is truncated and '...' is added to the end.
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| - void DrawStringInt(const std::wstring& text, const gfx::Font& font,
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| - const SkColor& color, int x, int y, int w, int h);
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| - void DrawStringInt(const std::wstring& text, const gfx::Font& font,
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| - const SkColor& color, const gfx::Rect& display_rect);
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| -
|
| - // 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,
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| - const SkColor& color, int x, int y, int w, int h,
|
| - int flags);
|
| -
|
| -#ifdef OS_WIN // Only implemented on Windows for now.
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| - // 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.
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| - void DrawStringWithHalo(const std::wstring& text, const gfx::Font& font,
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| - 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)
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| - // 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
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| - // 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
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| - // 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_
|
|
|