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/* TextArea.h
Copyright (c) 2024 by thewierdnut
Endless Sky is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later version.
Endless Sky is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include "Color.h"
#include "Panel.h"
#include "ScrollBar.h"
#include "ScrollVar.h"
#include "text/WrappedText.h"
#include <memory>
class Font;
class Rectangle;
class RenderBuffer;
class WrappedText;
// Represents a rect on the screen that needs to display text. The text can be
// larger than the display area, in which case the class will allow the text
// to scroll in response to use input.
class TextArea : public Panel
{
public:
TextArea();
TextArea(const Rectangle &r);
virtual ~TextArea();
void SetText(const std::string &s);
void SetRect(const Rectangle &r);
void SetFont(const Font &f);
void SetColor(const Color &c);
void SetAlignment(Alignment a);
void SetTruncate(Truncate t);
int GetTextHeight(bool trailingBreak = true);
int GetLongestLineWidth();
protected:
virtual void Draw() override;
virtual bool Click(int x, int y, MouseButton button, int clicks) override;
virtual bool Release(int x, int y, MouseButton button) override;
virtual bool Drag(double dx, double dy) override;
virtual bool Hover(int x, int y) override;
virtual bool Scroll(double dx, double dy) override;
void Invalidate();
void Validate(bool trailingBreak);
private:
bool bufferIsValid = false;
bool textIsValid = false;
std::shared_ptr<RenderBuffer> buffer;
WrappedText wrappedText;
std::string text;
Color color;
Point position;
Point size;
ScrollVar<double> scroll;
bool dragging = false;
bool hovering = false;
ScrollBar scrollBar;
bool scrollHeightIncludesTrailingBreak = false;
};
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