| // Copyright (c) 2011 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/browser/ntp_background_util.h" |
| |
| #include "base/logging.h" |
| #include "chrome/browser/themes/theme_service.h" |
| #include "grit/theme_resources.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| #include "ui/gfx/canvas.h" |
| #include "ui/gfx/rect.h" |
| #include "ui/gfx/skia_util.h" |
| |
| namespace { |
| |
| void PaintThemeBackground( |
| gfx::Canvas* canvas, SkBitmap* ntp_background, int tiling, int alignment, |
| const gfx::Rect& area, int tab_contents_height) { |
| int x_pos = 0; |
| int y_pos = 0; |
| int width = area.width() + ntp_background->width(); |
| int height = area.height() + ntp_background->height(); |
| |
| if (alignment & ThemeService::ALIGN_BOTTOM) |
| y_pos += area.height() + tab_contents_height - ntp_background->height(); |
| |
| if (alignment & ThemeService::ALIGN_RIGHT) { |
| x_pos += area.width() - ntp_background->width(); |
| } else if (alignment & ThemeService::ALIGN_LEFT) { |
| // no op |
| } else { // ALIGN_CENTER |
| x_pos += area.width() / 2 - ntp_background->width() / 2; |
| } |
| |
| if (tiling != ThemeService::REPEAT && |
| tiling != ThemeService::REPEAT_X) { |
| width = ntp_background->width(); |
| } else if (x_pos > 0) { |
| x_pos = x_pos % ntp_background->width() - ntp_background->width(); |
| } |
| |
| if (tiling != ThemeService::REPEAT && |
| tiling != ThemeService::REPEAT_Y) { |
| height = ntp_background->height(); |
| } else if (y_pos > 0) { |
| y_pos = y_pos % ntp_background->height() - ntp_background->height(); |
| } |
| |
| x_pos += area.x(); |
| y_pos += area.y(); |
| |
| canvas->TileImageInt(*ntp_background, x_pos, y_pos, width, height); |
| } |
| |
| } // namespace |
| |
| // static |
| void NtpBackgroundUtil::PaintBackgroundDetachedMode( |
| ui::ThemeProvider* tp, gfx::Canvas* canvas, const gfx::Rect& area, |
| int tab_contents_height) { |
| // Draw the background to match the new tab page. |
| canvas->FillRectInt(tp->GetColor(ThemeService::COLOR_NTP_BACKGROUND), |
| area.x(), area.y(), area.width(), area.height()); |
| |
| if (tp->HasCustomImage(IDR_THEME_NTP_BACKGROUND)) { |
| int tiling = ThemeService::NO_REPEAT; |
| tp->GetDisplayProperty(ThemeService::NTP_BACKGROUND_TILING, |
| &tiling); |
| int alignment; |
| if (tp->GetDisplayProperty(ThemeService::NTP_BACKGROUND_ALIGNMENT, |
| &alignment)) { |
| SkBitmap* ntp_background = tp->GetBitmapNamed(IDR_THEME_NTP_BACKGROUND); |
| |
| PaintThemeBackground( |
| canvas, ntp_background, tiling, alignment, area, tab_contents_height); |
| } |
| } |
| } |