File: gdi_util.h

package info (click to toggle)
chromium 138.0.7204.183-1
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 6,071,908 kB
  • sloc: cpp: 34,937,088; ansic: 7,176,967; javascript: 4,110,704; python: 1,419,953; asm: 946,768; xml: 739,971; pascal: 187,324; sh: 89,623; perl: 88,663; objc: 79,944; sql: 50,304; cs: 41,786; fortran: 24,137; makefile: 21,806; php: 13,980; tcl: 13,166; yacc: 8,925; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (31 lines) | stat: -rw-r--r-- 958 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
// Copyright 2012 The Chromium Authors
// 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 <windows.h>

#include "base/component_export.h"
#include "ui/gfx/geometry/rect.h"

namespace gfx {

// 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, meaning this header is for a
// 32-bits-per-pixel ARGB8888 bitmap.
COMPONENT_EXPORT(GFX)
void CreateBitmapV4HeaderForARGB888(int width, int height, BITMAPV4HEADER* hdr);

// Calculate scale to fit an entire page on DC.
COMPONENT_EXPORT(GFX)
float CalculatePageScale(HDC dc, int page_width, int page_height);

// Apply scaling to the DC.
COMPONENT_EXPORT(GFX) bool ScaleDC(HDC dc, float scale_factor);

}  // namespace gfx

#endif  // UI_GFX_GDI_UTIL_H_