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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "chrome/browser/views/theme_helpers.h"
#include <atlbase.h>
#include <atlapp.h>
#include <atltheme.h>
#include "base/gfx/bitmap_platform_device.h"
#include "chrome/common/gfx/chrome_canvas.h"
#include "base/logging.h"
#include "SkGradientShader.h"
void GetRebarGradientColors(int width, int x1, int x2, SkColor* c1, SkColor* c2) {
DCHECK(c1 && c2) << "ThemeHelpers::GetRebarGradientColors - c1 or c2 is NULL!";
// To get the colors we need, we draw a horizontal gradient using
// DrawThemeBackground, then extract the pixel values from and return
// those so calling code can use them to create gradient brushes for use in
// rendering in other directions.
ChromeCanvas canvas(width, 1, true);
// Render the Rebar gradient into the DIB
CTheme theme;
if (theme.IsThemingSupported())
theme.OpenThemeData(NULL, L"REBAR");
// On Windows XP+, if using a Theme, we can ask the theme to render the
// gradient for us.
if (!theme.IsThemeNull()) {
HDC dc = canvas.beginPlatformPaint();
RECT rect = { 0, 0, width, 1 };
theme.DrawThemeBackground(dc, 0, 0, &rect, NULL);
canvas.endPlatformPaint();
} else {
// On Windows 2000 or Windows XP+ with the Classic theme selected, we need
// to build our own gradient using system colors.
SkColor grad_colors[2];
COLORREF hl_ref = ::GetSysColor(COLOR_3DHILIGHT);
grad_colors[0] = SkColorSetRGB(GetRValue(hl_ref), GetGValue(hl_ref),
GetBValue(hl_ref));
COLORREF face_ref = ::GetSysColor(COLOR_3DFACE);
grad_colors[1] = SkColorSetRGB(GetRValue(face_ref), GetGValue(face_ref),
GetBValue(face_ref));
SkPoint grad_points[2];
grad_points[0].set(SkIntToScalar(0), SkIntToScalar(0));
grad_points[1].set(SkIntToScalar(width), SkIntToScalar(0));
SkShader* gradient_shader = SkGradientShader::CreateLinear(
grad_points, grad_colors, NULL, 2, SkShader::kRepeat_TileMode);
SkPaint paint;
paint.setShader(gradient_shader);
// Shader created with a ref count of 1, release as the paint now owns
// the gradient.
gradient_shader->unref();
paint.setStyle(SkPaint::kFill_Style);
canvas.drawRectCoords(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(width), SkIntToScalar(1), paint);
}
// Extract the color values from the selected pixels
// The | in the following operations forces the alpha to 0xFF. This is
// needed as windows sets the alpha to 0 when it renders.
gfx::BitmapPlatformDevice& device =
static_cast<gfx::BitmapPlatformDevice&>(canvas.getTopPlatformDevice());
*c1 = 0xFF000000 | device.getColorAt(x1, 0);
*c2 = 0xFF000000 | device.getColorAt(x2, 0);
}
void GetDarkLineColor(SkColor* dark_color) {
DCHECK(dark_color) << "ThemeHelpers::DarkColor - dark_color is NULL!";
CTheme theme;
if (theme.IsThemingSupported())
theme.OpenThemeData(NULL, L"REBAR");
// Note: the alpha values were chosen scientifically according to what looked
// best to me at the time! --beng
if (!theme.IsThemeNull()) {
*dark_color = SkColorSetARGB(60, 0, 0, 0);
} else {
COLORREF shadow_ref = ::GetSysColor(COLOR_3DSHADOW);
*dark_color = SkColorSetARGB(175,
GetRValue(shadow_ref),
GetGValue(shadow_ref),
GetBValue(shadow_ref));
}
}
|
