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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ui/gfx/canvas_skia.h" | 5 #include "ui/gfx/canvas_skia.h" |
6 | 6 |
7 #include <limits> | 7 #include <limits> |
8 | 8 |
9 #include "base/i18n/rtl.h" | 9 #include "base/i18n/rtl.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
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408 const SkColor& text_color, | 408 const SkColor& text_color, |
409 const SkColor& halo_color_in, | 409 const SkColor& halo_color_in, |
410 int x, int y, int w, int h, | 410 int x, int y, int w, int h, |
411 int flags) { | 411 int flags) { |
412 // Some callers will have semitransparent halo colors, which we don't handle | 412 // Some callers will have semitransparent halo colors, which we don't handle |
413 // (since the resulting image can have 1-bit transparency only). | 413 // (since the resulting image can have 1-bit transparency only). |
414 SkColor halo_color = halo_color_in | 0xFF000000; | 414 SkColor halo_color = halo_color_in | 0xFF000000; |
415 | 415 |
416 // Create a temporary buffer filled with the halo color. It must leave room | 416 // Create a temporary buffer filled with the halo color. It must leave room |
417 // for the 1-pixel border around the text. | 417 // for the 1-pixel border around the text. |
418 CanvasSkia text_canvas(w + 2, h + 2, true); | 418 gfx::Rect rect(gfx::Point(), gfx::Size(w + 2, h + 2)); |
| 419 CanvasSkia text_canvas(rect.width(), rect.height(), true); |
419 SkPaint bkgnd_paint; | 420 SkPaint bkgnd_paint; |
420 bkgnd_paint.setColor(halo_color); | 421 bkgnd_paint.setColor(halo_color); |
421 text_canvas.DrawRectInt(0, 0, w + 2, h + 2, bkgnd_paint); | 422 text_canvas.DrawRect(rect, bkgnd_paint); |
422 | 423 |
423 // Draw the text into the temporary buffer. This will have correct | 424 // Draw the text into the temporary buffer. This will have correct |
424 // ClearType since the background color is the same as the halo color. | 425 // ClearType since the background color is the same as the halo color. |
425 text_canvas.DrawStringInt(text, font, text_color, 1, 1, w, h, flags); | 426 text_canvas.DrawStringInt(text, font, text_color, 1, 1, w, h, flags); |
426 | 427 |
427 // Windows will have cleared the alpha channel for the pixels it drew. Make it | 428 // Windows will have cleared the alpha channel for the pixels it drew. Make it |
428 // opaque. We have to do this first since pixelShouldGetHalo will check for | 429 // opaque. We have to do this first since pixelShouldGetHalo will check for |
429 // 0 to see if a pixel has been modified to transparent, and black text that | 430 // 0 to see if a pixel has been modified to transparent, and black text that |
430 // Windows draw will look transparent to it! | 431 // Windows draw will look transparent to it! |
431 skia::MakeOpaque(text_canvas.sk_canvas(), 0, 0, w + 2, h + 2); | 432 skia::MakeOpaque(text_canvas.sk_canvas(), rect.x(), rect.y(), rect.width(), |
| 433 rect.height()); |
432 | 434 |
433 uint32_t halo_premul = SkPreMultiplyColor(halo_color); | 435 uint32_t halo_premul = SkPreMultiplyColor(halo_color); |
434 SkBitmap& text_bitmap = const_cast<SkBitmap&>( | 436 SkBitmap& text_bitmap = const_cast<SkBitmap&>( |
435 skia::GetTopDevice(*text_canvas.sk_canvas())->accessBitmap(true)); | 437 skia::GetTopDevice(*text_canvas.sk_canvas())->accessBitmap(true)); |
436 for (int cur_y = 0; cur_y < h + 2; cur_y++) { | 438 for (int cur_y = 0; cur_y < h + 2; cur_y++) { |
437 uint32_t* text_row = text_bitmap.getAddr32(0, cur_y); | 439 uint32_t* text_row = text_bitmap.getAddr32(0, cur_y); |
438 for (int cur_x = 0; cur_x < w + 2; cur_x++) { | 440 for (int cur_x = 0; cur_x < w + 2; cur_x++) { |
439 if (text_row[cur_x] == halo_premul) { | 441 if (text_row[cur_x] == halo_premul) { |
440 // This pixel was not touched by the text routines. See if it borders | 442 // This pixel was not touched by the text routines. See if it borders |
441 // a touched pixel in any of the 4 directions (not diagonally). | 443 // a touched pixel in any of the 4 directions (not diagonally). |
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572 ClipRect(solid_part); | 574 ClipRect(solid_part); |
573 DrawStringInt(text, font, color, | 575 DrawStringInt(text, font, color, |
574 text_rect.x(), text_rect.y(), | 576 text_rect.x(), text_rect.y(), |
575 text_rect.width(), text_rect.height(), | 577 text_rect.width(), text_rect.height(), |
576 flags); | 578 flags); |
577 canvas_->restore(); | 579 canvas_->restore(); |
578 canvas_->restore(); | 580 canvas_->restore(); |
579 } | 581 } |
580 | 582 |
581 } // namespace gfx | 583 } // namespace gfx |
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