Kayne Ruse
82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
/* Copyright: (c) Kayne Ruse 2013-2015
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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*/
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#include "button.hpp"
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#include <stdexcept>
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Button::State Button::MouseMotion(SDL_MouseMotionEvent const& motion) {
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return CalcState(motion.x, motion.y, motion.state & SDL_BUTTON_LMASK);
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}
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Button::State Button::MouseButtonDown(SDL_MouseButtonEvent const& button) {
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if (button.button == SDL_BUTTON_LEFT) {
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return CalcState(button.x, button.y, true);
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}
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return state;
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}
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Button::State Button::MouseButtonUp(SDL_MouseButtonEvent const& button) {
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if (button.button == SDL_BUTTON_LEFT) {
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return CalcState(button.x, button.y, false);
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}
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return state;
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}
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void Button::DrawTo(SDL_Surface* const dest) {
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if (!image || !font) {
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throw(std::runtime_error("Surface not set for Button"));
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}
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image->SetClipY(state * image->GetClipH());
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image->DrawTo(dest, x, y);
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font->DrawStringTo(text, dest, textX + x, textY + y);
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}
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std::string Button::SetText(std::string t) {
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if (!image || !font) {
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throw(std::runtime_error("Surface not set for Button"));
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}
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//one line, cache the position
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text = t;
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textX = (image->GetClipW() / 2) - (font->GetCharW() * text.size() / 2);
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textY = (image->GetClipH() / 2) - (font->GetCharH() / 2);
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return text;
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}
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Button::State Button::CalcState(Sint16 i, Sint16 j, bool leftPressed) {
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if (!image || !font) {
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throw(std::runtime_error("Surface not set for Button"));
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}
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//if out of bounds
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if (i < x || i >= (x + image->GetClipW()) ||
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j < y || j >= (y + image->GetClipH())
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) {
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return state = State::NORMAL;
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}
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if (leftPressed) {
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return state = State::PRESSED;
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}
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else {
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return state = State::HOVER;
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}
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}
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