mirror of
git://projects.qi-hardware.com/gmenu2x.git
synced 2025-04-03 16:47:30 +03:00
2a2634b364
It didn't work anymore, at all. Touchscreen polling occurred only
*after* waiting for a button had completed. So the touchscreen events,
if any, would be ignored until the user had pressed a button, possibly
firing off another action with that button press and forwarding the
touchscreen event to the next interface that got brought up as a
result.
Reusing this code and fixing it would require far more work than
rewriting everything anew with touchscreen devices in mind from the
beginning.
MtH: Resolved conflicts, mainly from the GMenu2X pointer to reference
change I did on 2015-04-21.
56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
// (c) 2013 Maarten ter Huurne <maarten@treewalker.org>
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// License: GPL version 2 or later.
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#ifndef LAYER_H
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#define LAYER_H
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#include "inputmanager.h"
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class Surface;
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/**
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* Abstract base class for UI layers.
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* A layer handles both painting and input events.
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*/
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class Layer {
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public:
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enum class Status { DISMISSED, NORMAL };
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virtual ~Layer() {}
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/**
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* Perform one frame worth of animation.
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* Returns true iff there are any animations in progress.
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*/
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virtual bool runAnimations() { return false; }
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/**
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* Paints this layer on the given surface.
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*/
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virtual void paint(Surface &s) = 0;
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/**
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* Handles the pressing of the give button.
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* Returns true iff the button press event was fully handled by this layer.
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*/
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virtual bool handleButtonPress(InputManager::Button button) = 0;
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Status getStatus() { return status; }
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protected:
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/**
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* Request the Layer to be removed from the stack.
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* There could be a few more calls to the Layer before it is actually
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* removed, so be prepared to handle those.
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*/
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void dismiss() {
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status = Status::DISMISSED;
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}
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private:
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Status status = Status::NORMAL;
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};
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#endif // LAYER_H
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