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
|
/*
==============================================================================
This file is part of the JUCE framework examples.
Copyright (c) Raw Material Software Limited
The code included in this file is provided under the terms of the ISC license
http://www.isc.org/downloads/software-support-policy/isc-license. Permission
to use, copy, modify, and/or distribute this software for any purpose with or
without fee is hereby granted provided that the above copyright notice and
this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
==============================================================================
*/
/*******************************************************************************
The block below describes the properties of this PIP. A PIP is a short snippet
of code that can be read by the Projucer and used to generate a JUCE project.
BEGIN_JUCE_PIP_METADATA
name: ComponentTransformsDemo
version: 1.0.0
vendor: JUCE
website: http://juce.com
description: Applies transformations to components.
dependencies: juce_core, juce_data_structures, juce_events, juce_graphics,
juce_gui_basics, juce_gui_extra
exporters: xcode_mac, vs2022, vs2026, linux_make, androidstudio,
xcode_iphone
moduleFlags: JUCE_STRICT_REFCOUNTEDPOINTER=1
type: Component
mainClass: ComponentTransformsDemo
useLocalCopy: 1
END_JUCE_PIP_METADATA
*******************************************************************************/
#pragma once
#include "../Assets/DemoUtilities.h"
#include "WidgetsDemo.h"
//==============================================================================
class ComponentTransformsDemo final : public Component
{
public:
ComponentTransformsDemo()
{
content.reset (new WidgetsDemo (true));
addAndMakeVisible (content.get());
content->setSize (750, 500);
for (int i = 0; i < 3; ++i)
{
auto* d = new CornerDragger();
addAndMakeVisible (draggers.add (d));
}
draggers.getUnchecked (0)->relativePos = { 0.10f, 0.15f };
draggers.getUnchecked (1)->relativePos = { 0.95f, 0.05f };
draggers.getUnchecked (2)->relativePos = { 0.05f, 0.85f };
setSize (800, 600);
}
void paint (Graphics& g) override
{
g.fillAll (getUIColourIfAvailable (LookAndFeel_V4::ColourScheme::UIColour::windowBackground));
g.setColour (Colours::white);
g.setFont (15.0f);
g.drawFittedText ("Drag the corner-points around to show how complex components can have affine-transforms applied...",
getLocalBounds().removeFromBottom (40).reduced (10, 0), Justification::centred, 3);
}
void resized() override
{
for (auto* d : draggers)
d->setCentrePosition (proportionOfWidth (d->relativePos.x),
proportionOfHeight (d->relativePos.y));
}
void childBoundsChanged (Component* child) override
{
if (dynamic_cast<CornerDragger*> (child) != nullptr)
updateTransform();
}
private:
std::unique_ptr<Component> content;
struct CornerDragger final : public Component
{
CornerDragger()
{
setSize (30, 30);
setRepaintsOnMouseActivity (true);
}
void paint (Graphics& g) override
{
g.setColour (Colours::white.withAlpha (isMouseOverOrDragging() ? 0.9f : 0.5f));
g.fillEllipse (getLocalBounds().reduced (3).toFloat());
g.setColour (Colours::darkgreen);
g.drawEllipse (getLocalBounds().reduced (3).toFloat(), 2.0f);
}
void resized() override
{
constrainer.setMinimumOnscreenAmounts (getHeight(), getWidth(), getHeight(), getWidth());
}
void moved() override
{
if (isMouseButtonDown())
relativePos = getBounds().getCentre().toFloat() / Point<int> (getParentWidth(), getParentHeight()).toFloat();
}
void mouseDown (const MouseEvent& e) override { dragger.startDraggingComponent (this, e); }
void mouseDrag (const MouseEvent& e) override { dragger.dragComponent (this, e, &constrainer); }
Point<float> relativePos;
private:
ComponentBoundsConstrainer constrainer;
ComponentDragger dragger;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (CornerDragger)
};
OwnedArray<CornerDragger> draggers;
Point<float> getDraggerPos (int index) const
{
return draggers.getUnchecked (index)->getBounds().getCentre().toFloat();
}
void updateTransform()
{
auto p0 = getDraggerPos (0);
auto p1 = getDraggerPos (1);
auto p2 = getDraggerPos (2);
if (p0 != p1 && p1 != p2 && p0 != p2)
content->setTransform (AffineTransform::fromTargetPoints (0, 0, p0.x, p0.y,
(float) content->getWidth(), 0, p1.x, p1.y,
0, (float) content->getHeight(), p2.x, p2.y));
}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ComponentTransformsDemo)
};
|
