JUCE-7.0.12-0-g4f43011b96 JUCE-7.0.12-0-g4f43011b96
JUCE — C++ application framework with suport for VST, VST3, LV2 audio plug-ins

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juce_CachedComponentImage.h
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1 /*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2022 - Raw Material Software Limited
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 By using JUCE, you agree to the terms of both the JUCE 7 End-User License
11 Agreement and JUCE Privacy Policy.
12
13 End User License Agreement: www.juce.com/juce-7-licence
14 Privacy Policy: www.juce.com/juce-privacy-policy
15
16 Or: You may also use this code under the terms of the GPL v3 (see
17 www.gnu.org/licenses).
18
19 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
20 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
21 DISCLAIMED.
22
23 ==============================================================================
24*/
25
26namespace juce
27{
28
29//==============================================================================
42{
43public:
44 CachedComponentImage() = default;
45 virtual ~CachedComponentImage() = default;
46
47 //==============================================================================
52 virtual void paint (Graphics&) = 0;
53
58 virtual bool invalidateAll() = 0;
59
64 virtual bool invalidate (const Rectangle<int>& area) = 0;
65
69 virtual void releaseResources() = 0;
70};
71
72} // namespace juce
Base class used internally for structures that can store cached images of component state.
virtual bool invalidateAll()=0
Invalidates all cached image data.
virtual bool invalidate(const Rectangle< int > &area)=0
Invalidates a section of the cached image data.
virtual void paint(Graphics &)=0
Called as part of the parent component's paint method, this must draw the given component into the ta...
virtual void releaseResources()=0
Called to indicate that the component is no longer active, so any cached data should be released if p...
A graphics context, used for drawing a component or image.
Manages a rectangle and allows geometric operations to be performed on it.
JUCE Namespace.