-
Notifications
You must be signed in to change notification settings - Fork 4
/
CustomTooltip.cs
260 lines (208 loc) · 8.25 KB
/
CustomTooltip.cs
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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
/*
The contents of this file are subject to the Mozilla Public License
Version 1.1 (the "License"); you may not use this file except in
compliance with the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/
Software distributed under the License is distributed on an "AS IS"
basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
License for the specific language governing rights and limitations
under the License.
The Original Code is Windows Heap Profiler Frontend.
The Initial Developer of the Original Code is Mozilla Corporation.
Original Author: K. Gadd ([email protected])
*/
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;
namespace HeapProfiler {
public partial class CustomTooltip : Form {
public const int MaxTooltipWidthPercent = 50;
public const int MaxTooltipHeightPercent = 60;
public const float FontSizeShrinkMultiplier = 0.95f;
public const float MinTooltipSizeEm = 7.5f;
public readonly ITooltipOwner Owner;
public TooltipContentBase Content;
protected VisualStyleRenderer BackgroundRenderer;
public CustomTooltip (ITooltipOwner owner) {
Owner = owner;
SetStyle(
ControlStyles.Opaque | ControlStyles.AllPaintingInWmPaint |
ControlStyles.UserPaint | ControlStyles.ResizeRedraw,
true
);
SetStyle(
ControlStyles.Selectable | ControlStyles.SupportsTransparentBackColor, false
);
try {
BackgroundRenderer = new VisualStyleRenderer(VisualStyleElement.ToolTip.Standard.Normal);
} catch {
BackgroundRenderer = null;
}
InitializeComponent();
}
protected override bool ShowWithoutActivation {
get {
return true;
}
}
protected override CreateParams CreateParams {
get {
var cp = base.CreateParams;
// CS_DROPSHADOW | CS_HREDRAW | CS_VREDRAW
cp.ClassStyle = 0x00020000 | 0x0002 | 0x0001;
return cp;
}
}
public void SetContent (TooltipContentBase content) {
bool wasVisible = Visible;
Visible = false;
Content = content;
var pos = content.Location;
var sz = content.Size;
SetBounds(pos.X, pos.Y, sz.Width, sz.Height);
UpdateRegion();
Refresh();
if (!wasVisible)
Show(Owner);
else
Visible = true;
}
protected void UpdateRegion () {
if (BackgroundRenderer == null)
return;
try {
if (BackgroundRenderer.IsBackgroundPartiallyTransparent())
using (var g = this.CreateGraphics())
this.Region = BackgroundRenderer.GetBackgroundRegion(g, ClientRectangle);
} catch {
}
}
protected override void OnPaint (PaintEventArgs e) {
base.OnPaint(e);
if (BackgroundRenderer == null) {
e.Graphics.Clear(SystemColors.Info);
} else {
e.Graphics.Clear(SystemColors.Window);
try {
BackgroundRenderer.DrawBackground(e.Graphics, ClientRectangle);
} catch {
}
}
Content.Render(e.Graphics);
}
protected override void OnPaintBackground (PaintEventArgs e) {
}
protected bool AdjustMouseEvent (ref MouseEventArgs e) {
var adjustedPos = Owner.PointToClient(PointToScreen(e.Location));
e = new MouseEventArgs(
e.Button,
e.Clicks,
adjustedPos.X,
adjustedPos.Y,
e.Delta
);
return Owner.ClientRectangle.Contains(adjustedPos);
}
protected override void OnMouseClick (MouseEventArgs e) {
if (AdjustMouseEvent(ref e))
Owner.Click(e);
else
Hide();
}
protected override void OnMouseDown (MouseEventArgs e) {
if (AdjustMouseEvent(ref e))
Owner.MouseDown(e);
else
Hide();
}
protected override void OnMouseMove (MouseEventArgs e) {
if (AdjustMouseEvent(ref e))
Owner.MouseMove(e);
else
Hide();
}
protected override void OnMouseUp (MouseEventArgs e) {
if (AdjustMouseEvent(ref e))
Owner.MouseUp(e);
else
Hide();
}
private void DeltaTooltip_FormClosed (object sender, FormClosedEventArgs e) {
Dispose();
}
public static StringFormat GetDefaultStringFormat () {
return new StringFormat {
Alignment = StringAlignment.Near,
LineAlignment = StringAlignment.Near,
FormatFlags = StringFormatFlags.FitBlackBox | StringFormatFlags.NoWrap |
StringFormatFlags.DisplayFormatControl | StringFormatFlags.MeasureTrailingSpaces,
HotkeyPrefix = System.Drawing.Text.HotkeyPrefix.None,
Trimming = StringTrimming.EllipsisPath
};
}
public static void FitContentOnScreen (
Graphics g, TooltipContentBase content,
ref Font font, ref Point tooltipPosition,
ref Size tooltipSize
) {
var screen = Screen.FromPoint(tooltipPosition);
var screenBounds = screen.WorkingArea;
var fontSize = font.Size;
Font tempFont = null;
// Iterate a few times to shrink the tooltip's font size if it's too big
for (int i = 0; i < 10; i++) {
var size = content.Measure(g);
tooltipSize.Width = size.Width;
tooltipSize.Height = size.Height;
if (fontSize <= MinTooltipSizeEm)
break;
if (size.Width < (screenBounds.Width * MaxTooltipWidthPercent / 100) &&
size.Height < (screenBounds.Height * MaxTooltipHeightPercent / 100))
break;
fontSize *= FontSizeShrinkMultiplier;
if (fontSize < MinTooltipSizeEm)
fontSize = MinTooltipSizeEm;
font = new Font(
font.FontFamily,
Math.Min(fontSize, MinTooltipSizeEm),
font.Style
);
if (tempFont != null)
tempFont.Dispose();
tempFont = font;
}
var maxWidth = (screenBounds.Width * MaxTooltipWidthPercent / 100);
var maxHeight = (screenBounds.Height * MaxTooltipHeightPercent / 100);
if (tooltipSize.Width > maxWidth)
tooltipSize.Width = maxWidth;
if (tooltipSize.Height > maxHeight)
tooltipSize.Height = maxHeight;
if (tooltipPosition.X < screenBounds.Left)
tooltipPosition.X = screenBounds.Left;
if (tooltipPosition.Y < screenBounds.Top)
tooltipPosition.Y = screenBounds.Top;
if ((tooltipPosition.X + tooltipSize.Width) >= screenBounds.Right)
tooltipPosition.X = (screenBounds.Right - tooltipSize.Width - 1);
if ((tooltipPosition.Y + tooltipSize.Height) >= screenBounds.Bottom)
tooltipPosition.Y = (screenBounds.Bottom - tooltipSize.Height - 1);
}
}
public interface ITooltipOwner : IWin32Window {
void MouseDown (MouseEventArgs e);
void MouseMove (MouseEventArgs e);
void MouseUp (MouseEventArgs e);
void Click (MouseEventArgs e);
Point PointToClient (Point screenPoint);
Rectangle ClientRectangle {
get;
}
}
public abstract class TooltipContentBase {
public Font Font;
public Point Location;
public Size Size;
public abstract void Render (Graphics g);
public abstract Size Measure (Graphics g);
}
}