--- /dev/null
+#include <string.h>
+#include <math.h>
+#include <assert.h>
+#include "draw.h"
+#include "imtk.h"
+
+#define COLOR_MASK 0xff
+
+/* default colors, can be changed with imtk_set_color */
+static float colors[][4] = {
+ {0.0, 0.0, 0.0, 1.0}, /* text color */
+ {0.75, 0.75, 0.75, 1.0}, /* top color */
+ {0.56, 0.56, 0.56, 1.0}, /* bot color */
+ {0.9, 0.9, 0.9, 1.0}, /* lit bevel */
+ {0.3, 0.3, 0.3, 1.0}, /* shadowed bevel */
+ {0.8, 0.25, 0.18, 1.0}, /* cursor color */
+ {0.68, 0.85, 1.3, 1.0}, /* selection color */
+ {0.75, 0.1, 0.095, 1.0} /* check color */
+};
+
+static float focus_factor = 1.15;
+static float press_factor = 0.8;
+static float alpha = 1.0;
+static float bevel = 1.0;
+
+void imtk_set_color(unsigned int col, float r, float g, float b, float a)
+{
+ int idx = col & COLOR_MASK;
+ assert(idx >= 0 && idx < sizeof colors / sizeof *colors);
+
+ colors[idx][0] = r;
+ colors[idx][1] = g;
+ colors[idx][2] = b;
+ colors[idx][3] = a;
+}
+
+float *imtk_get_color(unsigned int col)
+{
+ static float ret[4];
+ int idx = col & COLOR_MASK;
+
+ memcpy(ret, colors + idx, sizeof ret);
+ if(col & IMTK_FOCUS_BIT) {
+ ret[0] *= focus_factor;
+ ret[1] *= focus_factor;
+ ret[2] *= focus_factor;
+ }
+ if(col & IMTK_PRESS_BIT) {
+ ret[0] *= press_factor;
+ ret[1] *= press_factor;
+ ret[2] *= press_factor;
+ }
+ if(col & IMTK_SEL_BIT) {
+ ret[0] *= colors[IMTK_SELECTION_COLOR][0];
+ ret[1] *= colors[IMTK_SELECTION_COLOR][1];
+ ret[2] *= colors[IMTK_SELECTION_COLOR][2];
+ }
+ ret[3] *= alpha;
+ return ret;
+}
+
+void imtk_set_alpha(float a)
+{
+ alpha = a;
+}
+
+float imtk_get_alpha(void)
+{
+ return alpha;
+}
+
+void imtk_set_bevel_width(float b)
+{
+ bevel = b;
+}
+
+float imtk_get_bevel_width(void)
+{
+ return bevel;
+}
+
+void imtk_set_focus_factor(float fact)
+{
+ focus_factor = fact;
+}
+
+float imtk_get_focus_factor(void)
+{
+ return focus_factor;
+}
+
+void imtk_set_press_factor(float fact)
+{
+ press_factor = fact;
+}
+
+float imtk_get_press_factor(void)
+{
+ return press_factor;
+}
+
+void imtk_draw_rect(int x, int y, int w, int h, float *ctop, float *cbot)
+{
+ glBegin(GL_QUADS);
+ if(ctop) {
+ glColor4fv(ctop);
+ }
+ glVertex2f(x, y);
+ glVertex2f(x + w, y);
+
+ if(cbot) {
+ glColor4fv(cbot);
+ }
+ glVertex2f(x + w, y + h);
+ glVertex2f(x, y + h);
+ glEnd();
+}
+
+void imtk_draw_frame(int x, int y, int w, int h, int style)
+{
+ float tcol[4], bcol[4];
+ float b = imtk_get_bevel_width();
+
+ if(!b) {
+ return;
+ }
+
+ x -= b;
+ y -= b;
+ w += b * 2;
+ h += b * 2;
+
+ switch(style) {
+ case FRAME_INSET:
+ memcpy(tcol, imtk_get_color(IMTK_BEVEL_SHAD_COLOR), sizeof tcol);
+ memcpy(bcol, imtk_get_color(IMTK_BEVEL_LIT_COLOR), sizeof bcol);
+ break;
+
+ case FRAME_OUTSET:
+ default:
+ memcpy(tcol, imtk_get_color(IMTK_BEVEL_LIT_COLOR), sizeof tcol);
+ memcpy(bcol, imtk_get_color(IMTK_BEVEL_SHAD_COLOR), sizeof bcol);
+ }
+
+ glBegin(GL_QUADS);
+ glColor4fv(tcol);
+ glVertex2f(x, y);
+ glVertex2f(x + b, y + b);
+ glVertex2f(x + w - b, y + b);
+ glVertex2f(x + w, y);
+
+ glVertex2f(x + b, y + b);
+ glVertex2f(x, y);
+ glVertex2f(x, y + h);
+ glVertex2f(x + b, y + h - b);
+
+ glColor4fv(bcol);
+ glVertex2f(x + b, y + h - b);
+ glVertex2f(x + w - b, y + h - b);
+ glVertex2f(x + w, y + h);
+ glVertex2f(x, y + h);
+
+ glVertex2f(x + w - b, y + b);
+ glVertex2f(x + w, y);
+ glVertex2f(x + w, y + h);
+ glVertex2f(x + w - b, y + h - b);
+ glEnd();
+}
+
+void imtk_draw_disc(int x, int y, float rad, int subdiv, float *ctop, float *cbot)
+{
+ int i;
+ float t, dtheta, theta = 0.0;
+ float color[4];
+ float cx = (float)x;
+ float cy = (float)y;
+
+ subdiv += 3;
+ dtheta = 2.0 * M_PI / subdiv;
+
+ color[0] = (ctop[0] + cbot[0]) * 0.5;
+ color[1] = (ctop[1] + cbot[1]) * 0.5;
+ color[2] = (ctop[2] + cbot[2]) * 0.5;
+ color[3] = (ctop[3] + cbot[3]) * 0.5;
+
+ glBegin(GL_TRIANGLE_FAN);
+ glColor4fv(color);
+ glVertex2f(cx, cy);
+
+ for(i=0; i<=subdiv; i++) {
+ float vx, vy;
+
+ vx = cos(theta);
+ vy = sin(theta);
+ theta += dtheta;
+
+ t = (vy + 1.0) / 2.0;
+ color[0] = ctop[0] + (cbot[0] - ctop[0]) * t;
+ color[1] = ctop[1] + (cbot[1] - ctop[1]) * t;
+ color[2] = ctop[2] + (cbot[2] - ctop[2]) * t;
+ color[3] = ctop[3] + (cbot[3] - ctop[3]) * t;
+
+ glColor4fv(color);
+ glVertex2f(cx + vx * rad, cy + vy * rad);
+ }
+ glEnd();
+}
+
+void imtk_draw_disc_frame(int x, int y, float inner, float outer, int subdiv, int style)
+{
+ int i;
+ float t, dtheta, theta = 0.0;
+ float color[4], tcol[4], bcol[4];
+ float cx = (float)x;
+ float cy = (float)y;
+
+ switch(style) {
+ case FRAME_INSET:
+ memcpy(tcol, imtk_get_color(IMTK_BEVEL_SHAD_COLOR), sizeof tcol);
+ memcpy(bcol, imtk_get_color(IMTK_BEVEL_LIT_COLOR), sizeof bcol);
+ break;
+
+ case FRAME_OUTSET:
+ default:
+ memcpy(tcol, imtk_get_color(IMTK_BEVEL_LIT_COLOR), sizeof tcol);
+ memcpy(bcol, imtk_get_color(IMTK_BEVEL_SHAD_COLOR), sizeof bcol);
+ }
+
+ subdiv += 3;
+ dtheta = 2.0 * M_PI / subdiv;
+
+ glBegin(GL_QUAD_STRIP);
+
+ for(i=0; i<=subdiv; i++) {
+ float vx, vy;
+
+ vx = cos(theta);
+ vy = sin(theta);
+
+ t = (vy + 1.0) / 2.0;
+ color[0] = tcol[0] + (bcol[0] - tcol[0]) * t;
+ color[1] = tcol[1] + (bcol[1] - tcol[1]) * t;
+ color[2] = tcol[2] + (bcol[2] - tcol[2]) * t;
+ color[3] = tcol[3] + (bcol[3] - tcol[3]) * t;
+
+ vx = cos(theta - M_PI / 4.0);
+ vy = sin(theta - M_PI / 4.0);
+ theta += dtheta;
+
+ glColor4fv(color);
+ glVertex2f(cx + vx * inner, cy + vy * inner);
+ glVertex2f(cx + vx * outer, cy + vy * outer);
+ }
+ glEnd();
+}
+
+void imtk_draw_string(int x, int y, const char *str)
+{
+ /*
+ glRasterPos2i(x, y);
+ while(*str) {
+ glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, *str++);
+ }
+ */
+}
+
+int imtk_string_size(const char *str)
+{
+ return 0;
+}
projects / demo_prior / blobdiff