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authorben@chromium.org <ben@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2009-05-06 00:39:23 +0000
committerben@chromium.org <ben@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2009-05-06 00:39:23 +0000
commita5da0aa93ab70006854396439e47c795716664c2 (patch)
tree406ec34ecae757f3e43f813af40a21e8e9aeb9de /chrome/common/gfx
parentacc9a6def1c4c7d8b54149667e0c476d0c85a8f4 (diff)
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Move chrome_canvas to app/gfx
http://crbug.com/11387 Review URL: http://codereview.chromium.org/113011 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15361 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'chrome/common/gfx')
-rw-r--r--chrome/common/gfx/chrome_canvas.cc265
-rw-r--r--chrome/common/gfx/chrome_canvas.h217
-rw-r--r--chrome/common/gfx/chrome_canvas_linux.cc123
-rw-r--r--chrome/common/gfx/chrome_canvas_win.cc264
4 files changed, 0 insertions, 869 deletions
diff --git a/chrome/common/gfx/chrome_canvas.cc b/chrome/common/gfx/chrome_canvas.cc
deleted file mode 100644
index 328bf65..0000000
--- a/chrome/common/gfx/chrome_canvas.cc
+++ /dev/null
@@ -1,265 +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.
-
-#include "chrome/common/gfx/chrome_canvas.h"
-
-#include <limits>
-
-#include "app/l10n_util.h"
-#include "base/gfx/rect.h"
-#include "base/logging.h"
-#include "skia/include/SkShader.h"
-#include "chrome/common/gfx/chrome_font.h"
-
-bool ChromeCanvas::GetClipRect(gfx::Rect* r) {
- SkRect clip;
- if (!getClipBounds(&clip)) {
- if (r)
- r->SetRect(0, 0, 0, 0);
- return false;
- }
- r->SetRect(SkScalarRound(clip.fLeft), SkScalarRound(clip.fTop),
- SkScalarRound(clip.fRight - clip.fLeft),
- SkScalarRound(clip.fBottom - clip.fTop));
- return true;
-}
-
-bool ChromeCanvas::ClipRectInt(int x, int y, int w, int h) {
- SkRect new_clip;
- new_clip.set(SkIntToScalar(x), SkIntToScalar(y),
- SkIntToScalar(x + w), SkIntToScalar(y + h));
- return clipRect(new_clip);
-}
-
-bool ChromeCanvas::IntersectsClipRectInt(int x, int y, int w, int h) {
- SkRect clip;
- return getClipBounds(&clip) &&
- clip.intersect(SkIntToScalar(x), SkIntToScalar(y), SkIntToScalar(x + w),
- SkIntToScalar(y + h));
-}
-
-void ChromeCanvas::TranslateInt(int x, int y) {
- translate(SkIntToScalar(x), SkIntToScalar(y));
-}
-
-void ChromeCanvas::ScaleInt(int x, int y) {
- scale(SkIntToScalar(x), SkIntToScalar(y));
-}
-
-void ChromeCanvas::FillRectInt(const SkColor& color,
- int x, int y, int w, int h) {
- SkPaint paint;
- paint.setColor(color);
- paint.setStyle(SkPaint::kFill_Style);
- paint.setPorterDuffXfermode(SkPorterDuff::kSrcOver_Mode);
- FillRectInt(x, y, w, h, paint);
-}
-
-void ChromeCanvas::FillRectInt(int x, int y, int w, int h,
- const SkPaint& paint) {
- SkIRect rc = {x, y, x + w, y + h};
- drawIRect(rc, paint);
-}
-
-void ChromeCanvas::DrawRectInt(const SkColor& color,
- int x, int y, int w, int h) {
- DrawRectInt(color, x, y, w, h, SkPorterDuff::kSrcOver_Mode);
-}
-
-void ChromeCanvas::DrawRectInt(const SkColor& color,
- int x, int y, int w, int h,
- SkPorterDuff::Mode mode) {
- SkPaint paint;
- paint.setColor(color);
- paint.setStyle(SkPaint::kStroke_Style);
- // Set a stroke width of 0, which will put us down the stroke rect path. If
- // we set a stroke width of 1, for example, this will internally create a
- // path and fill it, which causes problems near the edge of the canvas.
- paint.setStrokeWidth(SkIntToScalar(0));
- paint.setPorterDuffXfermode(mode);
-
- SkIRect rc = {x, y, x + w, y + h};
- drawIRect(rc, paint);
-}
-
-void ChromeCanvas::DrawLineInt(const SkColor& color,
- int x1, int y1, int x2, int y2) {
- SkPaint paint;
- paint.setColor(color);
- paint.setStrokeWidth(SkIntToScalar(1));
- drawLine(SkIntToScalar(x1), SkIntToScalar(y1), SkIntToScalar(x2),
- SkIntToScalar(y2), paint);
-}
-
-void ChromeCanvas::DrawFocusRect(int x, int y, int width, int height) {
- // Create a 2D bitmap containing alternating on/off pixels - we do this
- // so that you never get two pixels of the same color around the edges
- // of the focus rect (this may mean that opposing edges of the rect may
- // have a dot pattern out of phase to each other).
- static SkBitmap* dots = NULL;
- if (!dots) {
- int col_pixels = 32;
- int row_pixels = 32;
-
- dots = new SkBitmap;
- dots->setConfig(SkBitmap::kARGB_8888_Config, col_pixels, row_pixels);
- dots->allocPixels();
- dots->eraseARGB(0, 0, 0, 0);
-
- uint32_t* dot = dots->getAddr32(0, 0);
- for (int i = 0; i < row_pixels; i++) {
- for (int u = 0; u < col_pixels; u++) {
- if ((u % 2 + i % 2) % 2 != 0) {
- dot[i * row_pixels + u] = SK_ColorGRAY;
- }
- }
- }
- }
-
- // First the horizontal lines.
-
- // Make a shader for the bitmap with an origin of the box we'll draw. This
- // shader is refcounted and will have an initial refcount of 1.
- SkShader* shader = SkShader::CreateBitmapShader(
- *dots, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode);
- // Assign the shader to the paint & release our reference. The paint will
- // now own the shader and the shader will be destroyed when the paint goes
- // out of scope.
- SkPaint paint;
- paint.setShader(shader);
- shader->unref();
-
- SkRect rect;
- rect.set(SkIntToScalar(x), SkIntToScalar(y),
- SkIntToScalar(x + width), SkIntToScalar(y + 1));
- drawRect(rect, paint);
- rect.set(SkIntToScalar(x), SkIntToScalar(y + height - 1),
- SkIntToScalar(x + width), SkIntToScalar(y + height));
- drawRect(rect, paint);
-
- rect.set(SkIntToScalar(x), SkIntToScalar(y),
- SkIntToScalar(x + 1), SkIntToScalar(y + height));
- drawRect(rect, paint);
- rect.set(SkIntToScalar(x + width - 1), SkIntToScalar(y),
- SkIntToScalar(x + width), SkIntToScalar(y + height));
- drawRect(rect, paint);
-}
-
-void ChromeCanvas::DrawBitmapInt(const SkBitmap& bitmap, int x, int y) {
- drawBitmap(bitmap, SkIntToScalar(x), SkIntToScalar(y));
-}
-
-void ChromeCanvas::DrawBitmapInt(const SkBitmap& bitmap, int x, int y,
- const SkPaint& paint) {
- drawBitmap(bitmap, SkIntToScalar(x), SkIntToScalar(y), &paint);
-}
-
-void ChromeCanvas::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) {
- SkPaint p;
- DrawBitmapInt(bitmap, src_x, src_y, src_w, src_h, dest_x, dest_y,
- dest_w, dest_h, filter, p);
-}
-
-void ChromeCanvas::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) {
- DLOG_ASSERT(src_x + src_w < std::numeric_limits<int16_t>::max() &&
- src_y + src_h < std::numeric_limits<int16_t>::max());
- if (src_w <= 0 || src_h <= 0 || dest_w <= 0 || dest_h <= 0) {
- NOTREACHED() << "Attempting to draw bitmap to/from an empty rect!";
- return;
- }
-
- if (!IntersectsClipRectInt(dest_x, dest_y, dest_w, dest_h))
- return;
-
- SkRect dest_rect = { SkIntToScalar(dest_x),
- SkIntToScalar(dest_y),
- SkIntToScalar(dest_x + dest_w),
- SkIntToScalar(dest_y + dest_h) };
-
- if (src_w == dest_w && src_h == dest_h) {
- // Workaround for apparent bug in Skia that causes image to occasionally
- // shift.
- SkIRect src_rect = { src_x, src_y, src_x + src_w, src_y + src_h };
- drawBitmapRect(bitmap, &src_rect, dest_rect, &paint);
- return;
- }
-
- // Make a bitmap shader that contains the bitmap we want to draw. This is
- // basically what SkCanvas.drawBitmap does internally, but it gives us
- // more control over quality and will use the mipmap in the source image if
- // it has one, whereas drawBitmap won't.
- SkShader* shader = SkShader::CreateBitmapShader(bitmap,
- SkShader::kRepeat_TileMode,
- SkShader::kRepeat_TileMode);
- SkMatrix shader_scale;
- shader_scale.setScale(SkFloatToScalar(static_cast<float>(dest_w) / src_w),
- SkFloatToScalar(static_cast<float>(dest_h) / src_h));
- shader_scale.preTranslate(SkIntToScalar(-src_x), SkIntToScalar(-src_y));
- shader_scale.postTranslate(SkIntToScalar(dest_x), SkIntToScalar(dest_y));
- shader->setLocalMatrix(shader_scale);
-
- // Set up our paint to use the shader & release our reference (now just owned
- // by the paint).
- SkPaint p(paint);
- p.setFilterBitmap(filter);
- p.setShader(shader);
- shader->unref();
-
- // The rect will be filled by the bitmap.
- drawRect(dest_rect, p);
-}
-
-void ChromeCanvas::DrawStringInt(const std::wstring& text,
- const ChromeFont& font,
- const SkColor& color,
- int x, int y,
- int w, int h) {
- DrawStringInt(text, font, color, x, y, w, h,
- l10n_util::DefaultCanvasTextAlignment());
-}
-
-void ChromeCanvas::TileImageInt(const SkBitmap& bitmap,
- int x, int y, int w, int h) {
- TileImageInt(bitmap, 0, 0, x, y, w, h);
-}
-
-void ChromeCanvas::TileImageInt(const SkBitmap& bitmap, int src_x, int src_y,
- int dest_x, int dest_y, int w, int h) {
- if (!IntersectsClipRectInt(dest_x, dest_y, w, h))
- return;
-
- SkPaint paint;
-
- SkShader* shader = SkShader::CreateBitmapShader(bitmap,
- SkShader::kRepeat_TileMode,
- SkShader::kRepeat_TileMode);
- paint.setShader(shader);
- paint.setPorterDuffXfermode(SkPorterDuff::kSrcOver_Mode);
-
- // CreateBitmapShader returns a Shader with a reference count of one, we
- // need to unref after paint takes ownership of the shader.
- shader->unref();
- save();
- translate(SkIntToScalar(dest_x - src_x), SkIntToScalar(dest_y - src_y));
- ClipRectInt(src_x, src_y, w, h);
- drawPaint(paint);
- restore();
-}
-
-SkBitmap ChromeCanvas::ExtractBitmap() {
- const SkBitmap& device_bitmap = getDevice()->accessBitmap(false);
-
- // Make a bitmap to return, and a canvas to draw into it. We don't just want
- // to call extractSubset or the copy constuctor, since we want an actual copy
- // of the bitmap.
- SkBitmap result;
- device_bitmap.copyTo(&result, SkBitmap::kARGB_8888_Config);
- return result;
-}
diff --git a/chrome/common/gfx/chrome_canvas.h b/chrome/common/gfx/chrome_canvas.h
deleted file mode 100644
index 72db8a5..0000000
--- a/chrome/common/gfx/chrome_canvas.h
+++ /dev/null
@@ -1,217 +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 CHROME_COMMON_GFX_CHROME_CANVAS_H_
-#define CHROME_COMMON_GFX_CHROME_CANVAS_H_
-
-#if defined(OS_WIN)
-#include <windows.h>
-#endif
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "skia/ext/platform_canvas.h"
-
-class ChromeFont;
-namespace gfx {
-class Rect;
-}
-
-#if defined(OS_LINUX)
-typedef struct _cairo cairo_t;
-#endif
-
-// ChromeCanvas is the SkCanvas used by Views for all painting. It
-// provides a handful of methods for the common operations used throughout
-// Views. With few exceptions, you should NOT create a ChromeCanvas directly,
-// rather one will be passed to you via the various paint methods in view.
-//
-// 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 SkPorterDuff::Mode. SkPorterDuff::Mode specifies how the
-// source and destination colors are combined. Unless otherwise specified,
-// the variant that does not take a SkPorterDuff::Mode uses a transfer mode
-// of kSrcOver_Mode.
-class ChromeCanvas : 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,
- };
-
- // Creates an empty ChromeCanvas. Callers must use initialize before using
- // the canvas.
- ChromeCanvas();
-
- ChromeCanvas(int width, int height, bool is_opaque);
-
- virtual ~ChromeCanvas();
-
- // 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 SkPorterDuff::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 SkPorterDuff::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,
- SkPorterDuff::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 ChromeFont& font,
- const SkColor& color, int x, int y, int w, int h);
-
- // 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 ChromeFont& 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 ChromeFont& 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();
-
-#if defined(OS_LINUX)
- // 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);
-#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 ChromeFont& font,
- int *width, int* height, int flags);
-
- 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_EVIL_CONSTRUCTORS(ChromeCanvas);
-};
-
-#if defined(OS_WIN) || defined(OS_LINUX)
-typedef skia::CanvasPaintT<ChromeCanvas> ChromeCanvasPaint;
-#endif
-
-#endif // CHROME_COMMON_GFX_CHROME_CANVAS_H_
diff --git a/chrome/common/gfx/chrome_canvas_linux.cc b/chrome/common/gfx/chrome_canvas_linux.cc
deleted file mode 100644
index 5f8b430..0000000
--- a/chrome/common/gfx/chrome_canvas_linux.cc
+++ /dev/null
@@ -1,123 +0,0 @@
-// Copyright (c) 2009 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.
-
-#include "chrome/common/gfx/chrome_canvas.h"
-
-#include <pango/pango.h>
-
-#include "base/gfx/rect.h"
-#include "base/logging.h"
-#include "base/string_util.h"
-#include "chrome/common/gfx/chrome_font.h"
-
-namespace {
-
-// Returns a new pango font, free with pango_font_description_free().
-PangoFontDescription* PangoFontFromChromeFont(const ChromeFont& chrome_font) {
- ChromeFont font = chrome_font; // Copy so we can call non-const methods.
- PangoFontDescription* pfd = pango_font_description_new();
- pango_font_description_set_family(pfd, WideToUTF8(font.FontName()).c_str());
- pango_font_description_set_size(pfd, font.FontSize() * PANGO_SCALE);
-
- switch (font.style()) {
- case ChromeFont::NORMAL:
- // Nothing to do, should already be PANGO_STYLE_NORMAL.
- break;
- case ChromeFont::BOLD:
- pango_font_description_set_weight(pfd, PANGO_WEIGHT_BOLD);
- break;
- case ChromeFont::ITALIC:
- pango_font_description_set_style(pfd, PANGO_STYLE_ITALIC);
- break;
- case ChromeFont::UNDERLINED:
- // TODO(deanm): How to do underlined? Where do we use it? Probably have
- // to paint it ourselves, see pango_font_metrics_get_underline_position.
- break;
- }
-
- return pfd;
-}
-
-} // namespace
-
-ChromeCanvas::ChromeCanvas(int width, int height, bool is_opaque)
- : skia::PlatformCanvasLinux(width, height, is_opaque) {
-}
-
-ChromeCanvas::ChromeCanvas() : skia::PlatformCanvasLinux() {
-}
-
-ChromeCanvas::~ChromeCanvas() {
-}
-
-// static
-void ChromeCanvas::SizeStringInt(const std::wstring& text,
- const ChromeFont& font,
- int* width, int* height, int flags) {
- NOTIMPLEMENTED();
-}
-
-void ChromeCanvas::ApplySkiaMatrixToCairoContext(cairo_t* cr) {
- const SkMatrix& skia_matrix = getTotalMatrix();
- cairo_matrix_t cairo_matrix;
- cairo_matrix_init(&cairo_matrix,
- SkScalarToFloat(skia_matrix.getScaleX()),
- SkScalarToFloat(skia_matrix.getSkewY()),
- SkScalarToFloat(skia_matrix.getSkewX()),
- SkScalarToFloat(skia_matrix.getScaleY()),
- SkScalarToFloat(skia_matrix.getTranslateX()),
- SkScalarToFloat(skia_matrix.getTranslateY()));
- cairo_set_matrix(cr, &cairo_matrix);
-}
-
-void ChromeCanvas::DrawStringInt(const std::wstring& text,
- const ChromeFont& font,
- const SkColor& color, int x, int y, int w,
- int h, int flags) {
- cairo_surface_t* surface = beginPlatformPaint();
- cairo_t* cr = cairo_create(surface);
- // We're going to draw onto the surface directly. This circumvents the matrix
- // installed by Skia. Apply the matrix from skia to cairo so they align and
- // we draw at the right place.
- ApplySkiaMatrixToCairoContext(cr);
- PangoLayout* layout = pango_cairo_create_layout(cr);
-
- cairo_set_source_rgb(cr,
- SkColorGetR(color) / 255.0,
- SkColorGetG(color) / 255.0,
- SkColorGetB(color) / 255.0);
-
- // TODO(deanm): Implement the rest of the ChromeCanvas flags.
- if (!(flags & ChromeCanvas::NO_ELLIPSIS))
- pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_END);
-
- pango_layout_set_width(layout, w * PANGO_SCALE);
- pango_layout_set_height(layout, h * PANGO_SCALE);
-
- std::string utf8 = WideToUTF8(text);
- pango_layout_set_text(layout, utf8.data(), utf8.size());
-
- PangoFontDescription* desc = PangoFontFromChromeFont(font);
- pango_layout_set_font_description(layout, desc);
- pango_font_description_free(desc);
-
- int width, height;
- pango_layout_get_size(layout, &width, &height);
-
- if (flags & ChromeCanvas::TEXT_VALIGN_TOP) {
- // Cairo should draw from the top left corner already.
- } else if (flags & ChromeCanvas::TEXT_VALIGN_BOTTOM) {
- y = y + (h - (height / PANGO_SCALE));
- } else {
- // Vertically centered.
- y = y + ((h - (height / PANGO_SCALE)) / 2);
- }
-
- cairo_move_to(cr, x, y);
- pango_cairo_show_layout(cr, layout);
-
- g_object_unref(layout);
- cairo_destroy(cr);
- // NOTE: beginPlatformPaint returned its surface, we shouldn't destroy it.
-}
diff --git a/chrome/common/gfx/chrome_canvas_win.cc b/chrome/common/gfx/chrome_canvas_win.cc
deleted file mode 100644
index aefb640..0000000
--- a/chrome/common/gfx/chrome_canvas_win.cc
+++ /dev/null
@@ -1,264 +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.
-
-#include "chrome/common/gfx/chrome_canvas.h"
-
-#include <limits>
-
-#include "app/l10n_util.h"
-#include "base/gfx/rect.h"
-#include "skia/include/SkShader.h"
-#include "chrome/common/gfx/chrome_font.h"
-
-namespace {
-
-// We make sure that LTR text we draw in an RTL context is modified
-// appropriately to make sure it maintains it LTR orientation.
-void DoDrawText(HDC hdc, const std::wstring& text,
- RECT* text_bounds, int flags) {
- std::wstring localized_text;
- const wchar_t* string_ptr = text.c_str();
- int string_size = static_cast<int>(text.length());
- // Only adjust string directionality if both of the following are true:
- // 1. The current locale is RTL.
- // 2. The string itself has RTL directionality.
- if (flags & DT_RTLREADING) {
- if (l10n_util::AdjustStringForLocaleDirection(text, &localized_text)) {
- string_ptr = localized_text.c_str();
- string_size = static_cast<int>(localized_text.length());
- }
- }
-
- DrawText(hdc, string_ptr, string_size, text_bounds, flags);
-}
-
-// Compute the windows flags necessary to implement the provided text
-// ChromeCanvas flags.
-int ComputeFormatFlags(int flags, const std::wstring& text) {
- int f = 0;
-
- // Setting the text alignment explicitly in case it hasn't already been set.
- // This will make sure that we don't align text to the left on RTL locales
- // just because no alignment flag was passed to DrawStringInt().
- if (!(flags & (ChromeCanvas::TEXT_ALIGN_CENTER |
- ChromeCanvas::TEXT_ALIGN_RIGHT |
- ChromeCanvas::TEXT_ALIGN_LEFT))) {
- flags |= l10n_util::DefaultCanvasTextAlignment();
- }
-
- if (flags & ChromeCanvas::HIDE_PREFIX)
- f |= DT_HIDEPREFIX;
- else if ((flags & ChromeCanvas::SHOW_PREFIX) == 0)
- f |= DT_NOPREFIX;
-
- if (flags & ChromeCanvas::MULTI_LINE) {
- f |= DT_WORDBREAK;
- if (flags & ChromeCanvas::CHARACTER_BREAK)
- f |= DT_EDITCONTROL;
- } else {
- f |= DT_SINGLELINE | DT_VCENTER;
- if (!(flags & ChromeCanvas::NO_ELLIPSIS))
- f |= DT_END_ELLIPSIS;
- }
-
- // vertical alignment
- if (flags & ChromeCanvas::TEXT_VALIGN_TOP)
- f |= DT_TOP;
- else if (flags & ChromeCanvas::TEXT_VALIGN_BOTTOM)
- f |= DT_BOTTOM;
- else
- f |= DT_VCENTER;
-
- // horizontal alignment
- if (flags & ChromeCanvas::TEXT_ALIGN_CENTER)
- f |= DT_CENTER;
- else if (flags & ChromeCanvas::TEXT_ALIGN_RIGHT)
- f |= DT_RIGHT;
- else
- f |= DT_LEFT;
-
- // In order to make sure RTL/BiDi strings are rendered correctly, we must
- // pass the flag DT_RTLREADING to DrawText (when the locale's language is
- // a right-to-left language) so that Windows does the right thing.
- //
- // In addition to correctly displaying text containing both RTL and LTR
- // elements (for example, a string containing a telephone number within a
- // sentence in Hebrew, or a sentence in Hebrew that contains a word in
- // English) this flag also makes sure that if there is not enough space to
- // display the entire string, the ellipsis is displayed on the left hand side
- // of the truncated string and not on the right hand side.
- //
- // We make a distinction between Chrome UI strings and text coming from a web
- // page.
- //
- // For text coming from a web page we determine the alignment based on the
- // first character with strong directionality. If the directionality of the
- // first character with strong directionality in the text is LTR, the
- // alignment is set to DT_LEFT, and the directionality should not be set as
- // DT_RTLREADING.
- //
- // This heuristic doesn't work for Chrome UI strings since even in RTL
- // locales, some of those might start with English text but we know they're
- // localized so we always want them to be right aligned, and their
- // directionality should be set as DT_RTLREADING.
- //
- // Caveat: If the string is purely LTR, don't set DTL_RTLREADING since when
- // the flag is set, LRE-PDF don't have the desired effect of rendering
- // multiline English-only text as LTR.
- if (l10n_util::GetTextDirection() == l10n_util::RIGHT_TO_LEFT &&
- (f & DT_RIGHT)) {
- if (l10n_util::StringContainsStrongRTLChars(text)) {
- f |= DT_RTLREADING;
- }
- }
- return f;
-}
-
-} // anonymous namespace
-
-ChromeCanvas::ChromeCanvas(int width, int height, bool is_opaque)
- : skia::PlatformCanvasWin(width, height, is_opaque) {
-}
-
-ChromeCanvas::ChromeCanvas() : skia::PlatformCanvasWin() {
-}
-
-ChromeCanvas::~ChromeCanvas() {
-}
-
-// static
-void ChromeCanvas::SizeStringInt(const std::wstring& text,
- const ChromeFont& font,
- int *width, int *height, int flags) {
- HDC dc = GetDC(NULL);
- HFONT old_font = static_cast<HFONT>(SelectObject(dc, font.hfont()));
- RECT b;
- b.left = 0;
- b.top = 0;
- b.right = *width;
- if (b.right == 0 && !text.empty()) {
- // Width needs to be at least 1 or else DoDrawText will not resize it.
- b.right = 1;
- }
- b.bottom = *height;
- DoDrawText(dc, text, &b, ComputeFormatFlags(flags, text) | DT_CALCRECT);
-
- // Restore the old font. This way we don't have to worry if the caller
- // deletes the font and the DC lives longer.
- SelectObject(dc, old_font);
- *width = b.right;
- *height = b.bottom;
-
- ReleaseDC(NULL, dc);
-}
-
-void ChromeCanvas::DrawStringInt(const std::wstring& text, HFONT font,
- const SkColor& color, int x, int y, int w,
- int h, int flags) {
- if (!IntersectsClipRectInt(x, y, w, h))
- return;
-
- RECT text_bounds = { x, y, x + w, y + h };
- HDC dc = beginPlatformPaint();
- SetBkMode(dc, TRANSPARENT);
- HFONT old_font = (HFONT)SelectObject(dc, font);
- COLORREF brush_color = RGB(SkColorGetR(color), SkColorGetG(color),
- SkColorGetB(color));
- SetTextColor(dc, brush_color);
-
- int f = ComputeFormatFlags(flags, text);
- DoDrawText(dc, text, &text_bounds, f);
- endPlatformPaint();
-
- // Restore the old font. This way we don't have to worry if the caller
- // deletes the font and the DC lives longer.
- SelectObject(dc, old_font);
-
- // Windows will have cleared the alpha channel of the text we drew. Assume
- // we're drawing to an opaque surface, or at least the text rect area is
- // opaque.
- getTopPlatformDevice().makeOpaque(x, y, w, h);
-}
-
-void ChromeCanvas::DrawStringInt(const std::wstring& text,
- const ChromeFont& font,
- const SkColor& color,
- int x, int y, int w, int h, int flags) {
- DrawStringInt(text, font.hfont(), color, x, y, w, h, flags);
-}
-
-// Checks each pixel immediately adjacent to the given pixel in the bitmap. If
-// any of them are not the halo color, returns true. This defines the halo of
-// pixels that will appear around the text. Note that we have to check each
-// pixel against both the halo color and transparent since DrawStringWithHalo
-// will modify the bitmap as it goes, and clears pixels shouldn't count as
-// changed.
-static bool pixelShouldGetHalo(const SkBitmap& bitmap, int x, int y,
- SkColor halo_color) {
- if (x > 0 &&
- *bitmap.getAddr32(x - 1, y) != halo_color &&
- *bitmap.getAddr32(x - 1, y) != 0)
- return true; // Touched pixel to the left.
- if (x < bitmap.width() - 1 &&
- *bitmap.getAddr32(x + 1, y) != halo_color &&
- *bitmap.getAddr32(x + 1, y) != 0)
- return true; // Touched pixel to the right.
- if (y > 0 &&
- *bitmap.getAddr32(x, y - 1) != halo_color &&
- *bitmap.getAddr32(x, y - 1) != 0)
- return true; // Touched pixel above.
- if (y < bitmap.height() - 1 &&
- *bitmap.getAddr32(x, y + 1) != halo_color &&
- *bitmap.getAddr32(x, y + 1) != 0)
- return true; // Touched pixel below.
- return false;
-}
-
-void ChromeCanvas::DrawStringWithHalo(const std::wstring& text,
- const ChromeFont& font,
- const SkColor& text_color,
- const SkColor& halo_color_in,
- int x, int y, int w, int h,
- int flags) {
- // Some callers will have semitransparent halo colors, which we don't handle
- // (since the resulting image can have 1-bit transparency only).
- SkColor halo_color = halo_color_in | 0xFF000000;
-
- // Create a temporary buffer filled with the halo color. It must leave room
- // for the 1-pixel border around the text.
- ChromeCanvas text_canvas(w + 2, h + 2, true);
- SkPaint bkgnd_paint;
- bkgnd_paint.setColor(halo_color);
- text_canvas.FillRectInt(0, 0, w + 2, h + 2, bkgnd_paint);
-
- // Draw the text into the temporary buffer. This will have correct
- // ClearType since the background color is the same as the halo color.
- text_canvas.DrawStringInt(text, font, text_color, 1, 1, w, h, flags);
-
- // Windows will have cleared the alpha channel for the pixels it drew. Make it
- // opaque. We have to do this first since pixelShouldGetHalo will check for
- // 0 to see if a pixel has been modified to transparent, and black text that
- // Windows draw will look transparent to it!
- text_canvas.getTopPlatformDevice().makeOpaque(0, 0, w + 2, h + 2);
-
- uint32_t halo_premul = SkPreMultiplyColor(halo_color);
- SkBitmap& text_bitmap = const_cast<SkBitmap&>(
- text_canvas.getTopPlatformDevice().accessBitmap(true));
- for (int cur_y = 0; cur_y < h + 2; cur_y++) {
- uint32_t* text_row = text_bitmap.getAddr32(0, cur_y);
- for (int cur_x = 0; cur_x < w + 2; cur_x++) {
- if (text_row[cur_x] == halo_premul) {
- // This pixel was not touched by the text routines. See if it borders
- // a touched pixel in any of the 4 directions (not diagonally).
- if (!pixelShouldGetHalo(text_bitmap, cur_x, cur_y, halo_premul))
- text_row[cur_x] = 0; // Make transparent.
- } else {
- text_row[cur_x] |= 0xff << SK_A32_SHIFT; // Make opaque.
- }
- }
- }
-
- // Draw the halo bitmap with blur.
- drawBitmap(text_bitmap, SkIntToScalar(x - 1), SkIntToScalar(y - 1));
-}