| // Copyright (c) 2012 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 UI_GFX_GDI_UTIL_H_ |
| #define UI_GFX_GDI_UTIL_H_ |
| |
| #include <vector> |
| #include <windows.h> |
| |
| #include "ui/base/ui_export.h" |
| #include "ui/gfx/rect.h" |
| #include "ui/gfx/path.h" |
| |
| namespace gfx { |
| |
| // Creates a BITMAPINFOHEADER structure given the bitmap's size. |
| UI_EXPORT void CreateBitmapHeader(int width, int height, BITMAPINFOHEADER* hdr); |
| |
| // Creates a BITMAPINFOHEADER structure given the bitmap's size and |
| // color depth in bits per pixel. |
| void CreateBitmapHeaderWithColorDepth(int width, int height, int color_depth, |
| BITMAPINFOHEADER* hdr); |
| |
| // Creates a BITMAPV4HEADER structure given the bitmap's size. You probably |
| // only need to use BMP V4 if you need transparency (alpha channel). This |
| // function sets the AlphaMask to 0xff000000. |
| UI_EXPORT void CreateBitmapV4Header(int width, int height, BITMAPV4HEADER* hdr); |
| |
| // Creates a monochrome bitmap header. |
| void CreateMonochromeBitmapHeader(int width, int height, BITMAPINFOHEADER* hdr); |
| |
| // Modify the given hrgn by subtracting the given rectangles. |
| UI_EXPORT void SubtractRectanglesFromRegion( |
| HRGN hrgn, |
| const std::vector<gfx::Rect>& cutouts); |
| |
| UI_EXPORT HRGN ConvertPathToHRGN(const gfx::Path& path); |
| |
| // Calculate scale to fit an entire page on DC. |
| UI_EXPORT double CalculatePageScale(HDC dc, int page_width, int page_height); |
| |
| // Apply scaling to the DC. |
| UI_EXPORT bool ScaleDC(HDC dc, double scale_factor); |
| |
| } // namespace gfx |
| |
| #endif // UI_GFX_GDI_UTIL_H_ |