99 lines
3.9 KiB
C
99 lines
3.9 KiB
C
#include "ui.h"
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#include "vec.h"
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#include <GL/freeglut_std.h>
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#include <GL/freeglut_ext.h>
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#include <GL/glut.h>
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#include <GL/gl.h>
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#include <stdio.h>
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#define BACK_COLOR 0.3, 0.35, 0.35
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#define BACK_CLICKED_COLOR 0.25, 0.3, 0.3
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void ui_button_draw(ui_button* b) {
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int wWidth = glutGet(GLUT_WINDOW_WIDTH);
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int wHeight = glutGet(GLUT_WINDOW_HEIGHT);
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vec3 pos = vec3_add(b->position.absolute, vec3_new(b->position.relative.x * wWidth, b->position.relative.y * wHeight, 0.0));
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vec3 ext = b->size;
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glColorVec(b->clicked ? vec3_new(BACK_CLICKED_COLOR) : vec3_new(BACK_COLOR));
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glBegin(GL_QUADS);
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glVertexVec(pos);
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glVertex3f(pos.x + ext.x, pos.y, pos.z);
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glVertexVec(vec3_add(pos, ext));
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glVertex3f(pos.x, pos.y + ext.y, pos.z);
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glEnd();
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glColor3f(0.7, 0.7, 0.8);
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glLineWidth(2.0);
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glBegin(GL_LINE_LOOP);
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glVertexVec(pos);
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glVertex3f(pos.x + ext.x, pos.y, pos.z);
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glVertexVec(vec3_add(pos, ext));
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glVertex3f(pos.x, pos.y + ext.y, pos.z);
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glEnd();
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// Draw text if needed
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if(b->text != NULL) {
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glColor3f(1.0, 1.0, 1.0);
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// Get text size
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int textWidth = glutBitmapLength(GLUT_BITMAP_TIMES_ROMAN_24, (unsigned char*)b->text);
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int textHeight = glutBitmapHeight(GLUT_BITMAP_TIMES_ROMAN_24);
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// set raster position - not gonna take into account multiple line text buttons
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vec3 rPos = vec3_add(pos, vec3_mult(ext, 0.5));
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rPos.x -= textWidth * 0.5;
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rPos.y -= textHeight * 0.25;
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glRasterPos3f(rPos.x, rPos.y, rPos.z);
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glutBitmapString(GLUT_BITMAP_TIMES_ROMAN_24, (unsigned char*)b->text);
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}
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}
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char ui_button_mouse_over(ui_button* b, int mouseX, int mouseY) {
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int wWidth = glutGet(GLUT_WINDOW_WIDTH);
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int wHeight = glutGet(GLUT_WINDOW_HEIGHT);
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vec3 pos = vec3_add(b->position.absolute, vec3_new(b->position.relative.x * wWidth, b->position.relative.y * wHeight, 0.0));
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vec3 ext = b->size;
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vec3 m = vec3_sub(vec3_new(mouseX, wHeight - mouseY, 0.0), pos);
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return m.x > 0.0 && m.x < ext.x && m.y > 0.0 && m.y < ext.y;
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}
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void ui_slider_draw(ui_slider* s) {
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int wWidth = glutGet(GLUT_WINDOW_WIDTH);
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int wHeight = glutGet(GLUT_WINDOW_HEIGHT);
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vec3 pos = vec3_add(s->position.absolute, vec3_new(s->position.relative.x * wWidth, s->position.relative.y * wHeight, 0.0));
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vec3 ext = s->size;
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vec3 slider = vec3_add(pos, vec3_new(ext.x * s->value, ext.y * 0.5, 0.0));
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glBegin(GL_QUADS);
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// draw background line
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glColor3f(BACK_COLOR);
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glVertexVec(pos);
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glVertex3f(pos.x + ext.x, pos.y, pos.z);
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glVertex3f(pos.x + ext.x, pos.y + ext.y, pos.z);
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glVertex3f(pos.x, pos.y + ext.y, pos.z);
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// Draw slider button thing
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glColor3f(1.0, 1.0, 1.0);
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glVertex3f(slider.x - ext.z, slider.y - ext.z, 0.0);
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glVertex3f(slider.x + ext.z, slider.y - ext.z, 0.0);
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glVertex3f(slider.x + ext.z, slider.y + ext.z, 0.0);
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glVertex3f(slider.x - ext.z, slider.y + ext.z, 0.0);
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glEnd();
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}
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char ui_slider_mouse_over(ui_slider* s, int mouseX, int mouseY) {
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int wWidth = glutGet(GLUT_WINDOW_WIDTH);
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int wHeight = glutGet(GLUT_WINDOW_HEIGHT);
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vec3 pos = vec3_add(s->position.absolute, vec3_new(s->position.relative.x * wWidth, s->position.relative.y * wHeight, 0.0));
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vec3 ext = s->size;
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vec3 m = vec3_sub(vec3_new(mouseX, wHeight - mouseY - 0.5 * ext.y, 0.0), pos);
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return m.x > 0.0 && m.x < ext.x && m.y > -ext.z && m.y < ext.z;
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}
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void ui_slider_onclick(ui_slider* s, int mouseX, int mouseY) {
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// we assume mouse is already hovering
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int wWidth = glutGet(GLUT_WINDOW_WIDTH);
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int wHeight = glutGet(GLUT_WINDOW_HEIGHT);
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vec3 pos = vec3_add(s->position.absolute, vec3_new(s->position.relative.x * wWidth, s->position.relative.y * wHeight, 0.0));
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s->value = ((float)mouseX - pos.x) / s->size.x;
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}
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