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Side by Side Diff: views/drag_utils_win.cc

Issue 113954: Refactors drag_utils. (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: Created 11 years, 6 months ago
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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2006-2008 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 "views/drag_utils.h" 5 #include "views/drag_utils.h"
6 6
7 #include <objidl.h> 7 #include <objidl.h>
8 #include <shlobj.h> 8 #include <shlobj.h>
9 #include <shobjidl.h> 9 #include <shobjidl.h>
10 10
11 #include "app/gfx/canvas.h" 11 #include "app/gfx/canvas.h"
12 #include "app/gfx/font.h"
13 #include "app/l10n_util.h"
14 #include "app/os_exchange_data.h" 12 #include "app/os_exchange_data.h"
15 #include "app/resource_bundle.h"
16 #include "base/file_util.h"
17 #include "base/gfx/gdi_util.h" 13 #include "base/gfx/gdi_util.h"
18 #include "base/gfx/point.h"
19 #include "base/string_util.h"
20 #include "googleurl/src/gurl.h"
21 #include "grit/app_resources.h"
22 #include "views/controls/button/text_button.h"
23 14
24 namespace drag_utils { 15 namespace drag_utils {
25 16
26 // Maximum width of the link drag image in pixels.
27 static const int kLinkDragImageMaxWidth = 200;
28 static const int kLinkDragImageVPadding = 3;
29 static const int kLinkDragImageVSpacing = 2;
30 static const int kLinkDragImageHPadding = 4;
31 static const SkColor kLinkDragImageBGColor = SkColorSetRGB(131, 146, 171);
32 //static const SkColor kLinkDragImageBGColor = SkColorSetRGB(195, 217, 255);
33 static const SkColor kLinkDragImageTextColor = SK_ColorBLACK;
34
35 // File dragging pixel measurements
36 static const int kFileDragImageMaxWidth = 200;
37 static const SkColor kFileDragImageTextColor = SK_ColorBLACK;
38
39 static void SetDragImageOnDataObject(HBITMAP hbitmap, 17 static void SetDragImageOnDataObject(HBITMAP hbitmap,
40 int width, 18 int width,
41 int height, 19 int height,
42 int cursor_offset_x, 20 int cursor_offset_x,
43 int cursor_offset_y, 21 int cursor_offset_y,
44 IDataObject* data_object) { 22 IDataObject* data_object) {
45 IDragSourceHelper* helper = NULL; 23 IDragSourceHelper* helper = NULL;
46 HRESULT rv = CoCreateInstance(CLSID_DragDropHelper, 0, CLSCTX_INPROC_SERVER, 24 HRESULT rv = CoCreateInstance(CLSID_DragDropHelper, 0, CLSCTX_INPROC_SERVER,
47 IID_IDragSourceHelper, reinterpret_cast<LPVOID*>(&helper)); 25 IID_IDragSourceHelper, reinterpret_cast<LPVOID*>(&helper));
48 if (SUCCEEDED(rv)) { 26 if (SUCCEEDED(rv)) {
(...skipping 24 matching lines...) Expand all
73 HGDIOBJ old_object = SelectObject(compatible_dc, bitmap); 51 HGDIOBJ old_object = SelectObject(compatible_dc, bitmap);
74 BitBlt(compatible_dc, 0, 0, width, height, 52 BitBlt(compatible_dc, 0, 0, width, height,
75 canvas.getTopPlatformDevice().getBitmapDC(), 53 canvas.getTopPlatformDevice().getBitmapDC(),
76 0, 0, SRCCOPY); 54 0, 0, SRCCOPY);
77 SelectObject(compatible_dc, old_object); 55 SelectObject(compatible_dc, old_object);
78 ReleaseDC(NULL, compatible_dc); 56 ReleaseDC(NULL, compatible_dc);
79 ReleaseDC(NULL, screen_dc); 57 ReleaseDC(NULL, screen_dc);
80 return bitmap; 58 return bitmap;
81 } 59 }
82 60
83 void SetURLAndDragImage(const GURL& url,
84 const std::wstring& title,
85 const SkBitmap& icon,
86 OSExchangeData* data) {
87 DCHECK(url.is_valid() && data);
88
89 data->SetURL(url, title);
90
91 // Create a button to render the drag image for us.
92 views::TextButton button(NULL,
93 title.empty() ? UTF8ToWide(url.spec()) : title);
94 button.set_max_width(kLinkDragImageMaxWidth);
95 if (icon.isNull()) {
96 button.SetIcon(*ResourceBundle::GetSharedInstance().GetBitmapNamed(
97 IDR_DEFAULT_FAVICON));
98 } else {
99 button.SetIcon(icon);
100 }
101 gfx::Size prefsize = button.GetPreferredSize();
102 button.SetBounds(0, 0, prefsize.width(), prefsize.height());
103
104 // Render the image.
105 gfx::Canvas canvas(prefsize.width(), prefsize.height(), false);
106 button.Paint(&canvas, true);
107 SetDragImageOnDataObject(canvas, prefsize.width(), prefsize.height(),
108 prefsize.width() / 2, prefsize.height() / 2,
109 data);
110 }
111
112 void CreateDragImageForFile(const std::wstring& file_name,
113 SkBitmap* icon,
114 IDataObject* data_object) {
115 DCHECK(icon);
116 DCHECK(data_object);
117
118 // Set up our text portion
119 const std::wstring& name = file_util::GetFilenameFromPath(file_name);
120 ResourceBundle& rb = ResourceBundle::GetSharedInstance();
121 gfx::Font font = rb.GetFont(ResourceBundle::BaseFont);
122
123 const int width = kFileDragImageMaxWidth;
124 // Add +2 here to allow room for the halo.
125 const int height = font.height() + icon->height() +
126 kLinkDragImageVPadding + 2;
127 gfx::Canvas canvas(width, height, false /* translucent */);
128
129 // Paint the icon.
130 canvas.DrawBitmapInt(*icon, (width - icon->width()) / 2, 0);
131
132 // Paint the file name. We inset it one pixel to allow room for the halo.
133 canvas.DrawStringWithHalo(name, font, kFileDragImageTextColor, SK_ColorWHITE,
134 1, icon->height() + kLinkDragImageVPadding + 1,
135 width - 2, font.height(),
136 gfx::Canvas::TEXT_ALIGN_CENTER);
137
138 SetDragImageOnDataObject(canvas, width, height, width / 2,
139 kLinkDragImageVPadding, data_object);
140 }
141
142 void SetDragImageOnDataObject(const gfx::Canvas& canvas, 61 void SetDragImageOnDataObject(const gfx::Canvas& canvas,
143 int width, 62 int width,
144 int height, 63 int height,
145 int cursor_x_offset, 64 int cursor_x_offset,
146 int cursor_y_offset, 65 int cursor_y_offset,
147 IDataObject* data_object) { 66 OSExchangeData* data_object) {
148 DCHECK(data_object && width > 0 && height > 0); 67 DCHECK(data_object && width > 0 && height > 0);
149 // SetDragImageOnDataObject(HBITMAP) takes ownership of the bitmap. 68 // SetDragImageOnDataObject(HBITMAP) takes ownership of the bitmap.
150 HBITMAP bitmap = CreateBitmapFromCanvas(canvas, width, height); 69 HBITMAP bitmap = CreateBitmapFromCanvas(canvas, width, height);
151 70
152 // Attach 'bitmap' to the data_object. 71 // Attach 'bitmap' to the data_object.
153 SetDragImageOnDataObject(bitmap, width, height, 72 SetDragImageOnDataObject(bitmap, width, height,
154 cursor_x_offset, 73 cursor_x_offset,
155 cursor_y_offset, 74 cursor_y_offset,
156 data_object); 75 data_object);
157 } 76 }
158 77
159 } // namespace drag_utils 78 } // namespace drag_utils
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