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// Copyright (c) Charles J. Cliffe
// SPDX-License-Identifier: GPL-2.0+
#include "ModeSelectorContext.h"
#include "ModeSelectorCanvas.h"
#include "ColorTheme.h"
ModeSelectorContext::ModeSelectorContext(ModeSelectorCanvas *canvas, wxGLContext *sharedContext) :
PrimaryGLContext(canvas, sharedContext) {
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
}
void ModeSelectorContext::DrawBegin() {
glClearColor(ThemeMgr::mgr.currentTheme->generalBackground.r, ThemeMgr::mgr.currentTheme->generalBackground.g, ThemeMgr::mgr.currentTheme->generalBackground.b,1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glDisable(GL_TEXTURE_2D);
}
void ModeSelectorContext::DrawSelector(const std::string& label, int c, int cMax, bool on, float r, float g, float b, float a, float px, float py) {
GLint vp[4];
glGetIntegerv( GL_VIEWPORT, vp);
float viewHeight = (float) vp[3];
float viewWidth = (float) vp[2];
int fontSize = 18;
if (viewWidth < 30 || viewHeight < 200) {
fontSize = 16;
}
glColor4f(r, g, b, a);
float y = 1.0 - ((float) (c+1) / (float) cMax * 2.0);
float height = (2.0 / (float) cMax);
float padX = (px / viewWidth);
float padY = (py / viewHeight);
if (a < 1.0) {
glEnable(GL_BLEND);
}
glBegin(on?GL_QUADS:GL_LINE_LOOP);
glVertex2f(-1.0 + padX, y + padY);
glVertex2f(1.0 - padX, y + padY);
glVertex2f(1.0 - padX, y + height - padY);
glVertex2f(-1.0 + padX, y + height - padY);
glEnd();
if (a < 1.0) {
glDisable(GL_BLEND);
}
if (on) {
glColor4f(0, 0, 0, a);
}
//Do not zoom the selectors
GLFont::getFont(fontSize).drawString(label, 0.0, y + height / 2.0, GLFont::GLFONT_ALIGN_CENTER, GLFont::GLFONT_ALIGN_CENTER);
}
void ModeSelectorContext::DrawEnd() {
// glFlush();
// CheckGLError();
}
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