nuclear@6: #include <assert.h>
nuclear@6: #include "imtk.h"
nuclear@6: #include "state.h"
nuclear@6: #include "draw.h"
nuclear@6: 
nuclear@6: static void calc_button_size(const char *label, int *wret, int *hret);
nuclear@6: static void draw_button(int id, const char *label, int x, int y);
nuclear@6: 
nuclear@6: int imtk_button(int id, const char *label, int x, int y)
nuclear@6: {
nuclear@6: 	int w, h, res = 0;
nuclear@6: 	int over = 0;
nuclear@6: 
nuclear@6: 	assert(id >= 0);
nuclear@6: 
nuclear@6: 	calc_button_size(label, &w, &h);
nuclear@6: 
nuclear@6: 	if(imtk_hit_test(x, y, w, h)) {
nuclear@6: 		imtk_set_hot(id);
nuclear@6: 		over = 1;
nuclear@6: 	}
nuclear@6: 
nuclear@6: 	if(imtk_button_state(IMTK_LEFT_BUTTON)) {
nuclear@6: 		if(over) {
nuclear@6: 			imtk_set_active(id);
nuclear@6: 		}
nuclear@6: 	} else { /* mouse button up */
nuclear@6: 		if(imtk_is_active(id)) {
nuclear@6: 			imtk_set_active(-1);
nuclear@6: 			if(imtk_is_hot(id) && over) {
nuclear@6: 				res = 1;
nuclear@6: 			}
nuclear@6: 		}
nuclear@6: 	}
nuclear@6: 
nuclear@6: 	draw_button(id, label, x, y);
nuclear@6: 	return res;
nuclear@6: }
nuclear@6: 
nuclear@6: static void draw_button(int id, const char *label, int x, int y)
nuclear@6: {
nuclear@6: 	int width, height;
nuclear@6: 
nuclear@6: 	calc_button_size(label, &width, &height);
nuclear@6: 
nuclear@6: 	glBegin(GL_QUADS);
nuclear@6: 	if(imtk_hit_test(x, y, width, height)) {
nuclear@6: 		glColor4fv(imtk_get_color(IMTK_FOCUS_COLOR));
nuclear@6: 	} else {
nuclear@6: 		glColor4fv(imtk_get_color(IMTK_BASE_COLOR));
nuclear@6: 	}
nuclear@6: 	glVertex2f(x, y);
nuclear@6: 	glVertex2f(x + width, y);
nuclear@6: 	glVertex2f(x + width, y + height);
nuclear@6: 	glVertex2f(x, y + height);
nuclear@6: 	glEnd();
nuclear@6: 
nuclear@6: 	imtk_draw_frame(x, y, width, height, imtk_is_active(id) ? FRAME_INSET : FRAME_OUTSET);
nuclear@6: 
nuclear@6: 	glColor4fv(imtk_get_color(IMTK_TEXT_COLOR));
nuclear@6: 	imtk_draw_string(x + 20, y + 15, label);
nuclear@6: }
nuclear@6: 
nuclear@6: static void calc_button_size(const char *label, int *wret, int *hret)
nuclear@6: {
nuclear@6: 	int strsz = imtk_string_size(label);
nuclear@6: 	if(wret) *wret = strsz + 40;
nuclear@6: 	if(hret) *hret = 20;
nuclear@6: }