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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_VCL_CTRL_HXX
#define INCLUDED_VCL_CTRL_HXX
#include <tools/link.hxx>
#include <vcl/dllapi.h>
#include <vcl/window.hxx>
#include <memory>
// forward
namespace vcl { struct ImplControlData; }
class StyleSettings;
class VCL_DLLPUBLIC Control : public vcl::Window
{
protected:
std::unique_ptr<vcl::ImplControlData> mpControlData;
private:
bool mbHasControlFocus;
bool mbShowAccelerator;
Link<Control&,void> maLoseFocusHdl;
SAL_DLLPRIVATE void ImplInitControlData();
Control (const Control &) = delete;
Control & operator= (const Control &) = delete;
protected:
Control( WindowType nType );
virtual void FillLayoutData() const;
// helper method for composite controls
void AppendLayoutData( const Control& rSubControl ) const;
/// creates the mpData->mpLayoutData structure
void CreateLayoutData() const;
/// determines whether we currently have layout data
bool HasLayoutData() const;
/** this calls both our event listeners, and a specified handler
If the Control instance is destroyed during any of those calls, the
method properly handles this (in particular, it doesn't crash :)
@param nEvent
the event to notify to our event listeners
@param callHandler
the lambda function that calls the handler
@return
if the Control instance has been destroyed in any of the call
*/
bool ImplCallEventListenersAndHandler(
VclEventId nEvent, std::function<void()> const & callHandler
);
void CallEventListeners( VclEventId nEvent, void* pData = nullptr );
/** draws the given text onto the given device
If no reference device is set, the draw request will simply be forwarded to OutputDevice::DrawText. Otherwise,
the text will be rendered according to the metrics at the reference device.
return will contain the result of a GetTextRect call (either directly
at the target device, or taking the reference device into account) when
returning.
*/
tools::Rectangle DrawControlText( OutputDevice& _rTargetDevice, const tools::Rectangle& _rRect,
const OUString& _rStr, DrawTextFlags _nStyle,
MetricVector* _pVector, OUString* _pDisplayText,
const Size* i_pDeviceSize = nullptr ) const;
tools::Rectangle GetControlTextRect( OutputDevice& _rTargetDevice, const tools::Rectangle & rRect,
const OUString& _rStr, DrawTextFlags _nStyle,
Size* o_pDeviceSize = nullptr ) const;
virtual const vcl::Font&
GetCanonicalFont( const StyleSettings& _rStyle ) const;
virtual const Color&
GetCanonicalTextColor( const StyleSettings& _rStyle ) const;
void ImplInitSettings();
virtual void ApplySettings(vcl::RenderContext& rRenderContext) override;
public:
SAL_DLLPRIVATE void ImplClearLayoutData() const;
/** draws a frame around the give rectangle, onto the given device
only to be used from within the Window::Draw method of your sub class.
The frame is always drawn with a single line (without 3D effects). In addition, any mono
color set at the control's settings is respected. Yet more additionally, if we're living
in a themed desktop, this theming is ignored.
Note that this makes sense, since the *only known* clients of Window::Draw
are form controls, when printed or print-previewed. For form controls embedded in office documents,
you don't want to have the theme look.
@param pDev
the device to draw onto
@param rRect
the rect for drawing the frame. Upon returning from the call, the rect will be inflated
by the space occupied by the drawn pixels.
*/
SAL_DLLPRIVATE void ImplDrawFrame( OutputDevice* pDev, tools::Rectangle& rRect );
public:
explicit Control( vcl::Window* pParent, WinBits nWinStyle = 0 );
virtual ~Control() override;
virtual void dispose() override;
virtual void EnableRTL ( bool bEnable = true ) override;
virtual bool EventNotify( NotifyEvent& rNEvt ) override;
virtual void StateChanged( StateChangedType nStateChange ) override;
virtual void Resize() override;
// invalidates layout data
virtual void SetText( const OUString& rStr ) override;
// gets the displayed text
virtual OUString GetDisplayText() const override;
// returns the bounding box for the character at index nIndex (in control coordinates)
tools::Rectangle GetCharacterBounds( long nIndex ) const;
// returns the character index for corresponding to rPoint (in control coordinates)
// -1 is returned if no character is at that point
long GetIndexForPoint( const Point& rPoint ) const;
// returns the interval [start,end] of line nLine
// returns [-1,-1] for an invalid line
Pair GetLineStartEnd( long nLine ) const;
/** ToRelativeLineIndex changes a layout data index to a count relative to its line.
This is equivalent to getting the line start/end pairs with
GetLineStartEnd() until the index lies within [start,end] of a line
@param nIndex
the absolute index inside the display text to be changed to a relative index
@returns
the relative index inside the displayed line or -1 if the absolute index does
not match any line
*/
long ToRelativeLineIndex( long nIndex ) const;
void SetLoseFocusHdl( const Link<Control&,void>& rLink ) { maLoseFocusHdl = rLink; }
/** determines whether the control currently has the focus
*/
bool HasControlFocus() const { return mbHasControlFocus; }
void SetLayoutDataParent( const Control* pParent ) const;
virtual Size GetOptimalSize() const override;
/** sets a reference device used for rendering control text
@see DrawControlText
*/
void SetReferenceDevice( OutputDevice* _referenceDevice );
OutputDevice* GetReferenceDevice() const;
vcl::Font GetUnzoomedControlPointFont() const;
void SetShowAccelerator (bool val);
};
#endif // INCLUDED_VCL_CTRL_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
