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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "Button.h"
#include "Gui.h"
#include "Rendering/Fonts/glFont.h"
#include "Rendering/GL/myGL.h"
#include "System/Log/ILog.h"
namespace agui
{
Button::Button(const std::string& _label, GuiElement* _parent)
: GuiElement(_parent)
{
Label(_label);
}
void Button::Label(const std::string& _label)
{
label = _label;
clicked = false;
hovered = false;
}
void Button::DrawSelf()
{
gui->SetDrawMode(Gui::DrawMode::COLOR);
const float opacity = Opacity();
gui->SetColor(0.8f, 0.8f, 0.8f, opacity);
DrawBox();
gui->SetColor(1.0f, 1.0f, 1.0f, 0.1f);
if (clicked) {
glAttribStatePtr->BlendFunc(GL_ONE, GL_ONE); // additive blending
gui->SetColor(0.2f, 0.0f, 0.0f, opacity);
DrawBox();
glAttribStatePtr->BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gui->SetColor(1.0f, 0.0f, 0.0f, opacity / 2.0f);
DrawOutline();
} else if (hovered) {
glAttribStatePtr->BlendFunc(GL_ONE, GL_ONE); // additive blending
gui->SetColor(0.0f, 0.0f, 0.2f, opacity);
DrawBox();
glAttribStatePtr->BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gui->SetColor(1.0f, 1.0f, 1.0f, opacity / 2.0f);
DrawOutline();
}
gui->SetColor(1.0f, 1.0f, 1.0f, 1.0f);
gui->SetDrawMode(Gui::DrawMode::FONT);
font->SetTextColor(1.0f, 1.0f, 1.0f, opacity);
font->SetOutlineColor(0.0f, 0.0f, 0.0f, opacity);
font->SetTextDepth(depth);
font->glPrint(pos[0] + size[0] * 0.5f, pos[1] + size[1] * 0.5f, 1.0, FONT_CENTER | FONT_VCENTER | FONT_SHADOW | FONT_SCALE | FONT_NORM | FONT_BUFFERED, label);
font->DrawBufferedGL4(gui->GetShader());
}
bool Button::HandleEventSelf(const SDL_Event& ev)
{
switch (ev.type) {
case SDL_MOUSEBUTTONDOWN: {
if ((ev.button.button == SDL_BUTTON_LEFT)
&& MouseOver(ev.button.x, ev.button.y)
&& gui->MouseOverElement(GetRoot(), ev.button.x, ev.button.y))
{
clicked = true;
}
break;
}
case SDL_MOUSEBUTTONUP: {
if ((ev.button.button == SDL_BUTTON_LEFT)
&& MouseOver(ev.button.x, ev.button.y)
&& clicked)
{
if (!Clicked.empty()) {
Clicked.emit();
} else {
LOG_L(L_WARNING, "Button %s clicked without callback", label.c_str());
}
clicked = false;
return true;
}
break;
}
case SDL_MOUSEMOTION: {
if (MouseOver(ev.motion.x, ev.motion.y)
&& gui->MouseOverElement(GetRoot(), ev.motion.x, ev.motion.y))
{
hovered = true;
} else {
hovered = false;
clicked = false;
}
break;
}
}
return false;
}
} // namespace agui
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