imtk

annotate src/draw.c @ 13:9c7987064bb0

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- fixed the frame drawing a bit - added global alpha value and various drawing parameters - backported the checkbox check mark from glamtk - fixed progress bar drawing so that the bevels of the trough and the bar won't overlap
author John Tsiombikas <nuclear@siggraph.org>
date Mon, 18 Apr 2011 06:15:46 +0300
parents 10604ff95527
children df2bc9406561
rev   line source
nuclear@6 1 #include <string.h>
nuclear@6 2 #include <assert.h>
nuclear@6 3 #include "draw.h"
nuclear@6 4 #include "imtk.h"
nuclear@6 5
nuclear@6 6 /* default colors, can be changed with imtk_set_color */
nuclear@6 7 static float colors[][4] = {
nuclear@6 8 {0.0, 0.0, 0.0, 1.0}, /* text color */
nuclear@6 9 {0.7, 0.7, 0.7, 1.0}, /* base color */
nuclear@6 10 {0.85, 0.85, 0.85, 1.0}, /* focus color */
nuclear@6 11 {1.0, 1.0, 1.0, 1.0}, /* lit bevel */
nuclear@13 12 {0.3, 0.3, 0.3, 1.0}, /* shadowed bevel */
nuclear@13 13 {0.8, 0.25, 0.18, 1.0}, /* cursor color */
nuclear@13 14 {0.4, 0.5, 0.9, 1.0}, /* selection color */
nuclear@13 15 {0.63, 0.078, 0.078, 1.0} /* check color */
nuclear@6 16 };
nuclear@6 17
nuclear@13 18 static float alpha = 1.0;
nuclear@13 19 static float bevel = 1.0;
nuclear@13 20
nuclear@6 21 void imtk_set_color(int col, float r, float g, float b, float a)
nuclear@6 22 {
nuclear@6 23 assert(col >= 0 && col < sizeof colors / sizeof *colors);
nuclear@6 24
nuclear@6 25 colors[col][0] = r;
nuclear@6 26 colors[col][1] = g;
nuclear@6 27 colors[col][2] = b;
nuclear@6 28 colors[col][3] = a;
nuclear@6 29 }
nuclear@6 30
nuclear@6 31 float *imtk_get_color(int col)
nuclear@6 32 {
nuclear@13 33 static float ret[4];
nuclear@13 34 memcpy(ret, colors + col, sizeof ret);
nuclear@13 35 ret[3] *= alpha;
nuclear@13 36 return ret;
nuclear@13 37 }
nuclear@13 38
nuclear@13 39 void imtk_set_alpha(float a)
nuclear@13 40 {
nuclear@13 41 alpha = a;
nuclear@13 42 }
nuclear@13 43
nuclear@13 44 float imtk_get_alpha(void)
nuclear@13 45 {
nuclear@13 46 return alpha;
nuclear@13 47 }
nuclear@13 48
nuclear@13 49 void imtk_set_bevel_width(float b)
nuclear@13 50 {
nuclear@13 51 bevel = b;
nuclear@13 52 }
nuclear@13 53
nuclear@13 54 float imtk_get_bevel_width(void)
nuclear@13 55 {
nuclear@13 56 return bevel;
nuclear@6 57 }
nuclear@6 58
nuclear@8 59 void imtk_draw_rect(int x, int y, int w, int h, float *color_rgba)
nuclear@8 60 {
nuclear@8 61 glBegin(GL_QUADS);
nuclear@8 62 if(color_rgba) {
nuclear@8 63 glColor4fv(color_rgba);
nuclear@8 64 }
nuclear@8 65 glVertex2f(x, y);
nuclear@8 66 glVertex2f(x + w, y);
nuclear@8 67 glVertex2f(x + w, y + h);
nuclear@8 68 glVertex2f(x, y + h);
nuclear@8 69 glEnd();
nuclear@8 70 }
nuclear@8 71
nuclear@6 72 void imtk_draw_frame(int x, int y, int w, int h, int style)
nuclear@6 73 {
nuclear@6 74 float tcol[4], bcol[4];
nuclear@13 75 float b = imtk_get_bevel_width();
nuclear@6 76
nuclear@6 77 switch(style) {
nuclear@6 78 case FRAME_INSET:
nuclear@13 79 memcpy(tcol, imtk_get_color(IMTK_BEVEL_SHAD_COLOR), sizeof tcol);
nuclear@13 80 memcpy(bcol, imtk_get_color(IMTK_BEVEL_LIT_COLOR), sizeof bcol);
nuclear@6 81 break;
nuclear@6 82
nuclear@6 83 case FRAME_OUTSET:
nuclear@6 84 default:
nuclear@13 85 memcpy(tcol, imtk_get_color(IMTK_BEVEL_LIT_COLOR), sizeof tcol);
nuclear@13 86 memcpy(bcol, imtk_get_color(IMTK_BEVEL_SHAD_COLOR), sizeof bcol);
nuclear@6 87 }
nuclear@6 88
nuclear@13 89 glBegin(GL_QUADS);
nuclear@13 90 glColor4fv(tcol);
nuclear@13 91 glVertex2f(x, y);
nuclear@13 92 glVertex2f(x + b, y + b);
nuclear@13 93 glVertex2f(x + w - b, y + b);
nuclear@13 94 glVertex2f(x + w, y);
nuclear@13 95
nuclear@13 96 glVertex2f(x + b, y + b);
nuclear@13 97 glVertex2f(x, y);
nuclear@13 98 glVertex2f(x, y + h);
nuclear@13 99 glVertex2f(x + b, y + h - b);
nuclear@13 100
nuclear@13 101 glColor4fv(bcol);
nuclear@13 102 glVertex2f(x + b, y + h - b);
nuclear@13 103 glVertex2f(x + w - b, y + h - b);
nuclear@13 104 glVertex2f(x + w, y + h);
nuclear@13 105 glVertex2f(x, y + h);
nuclear@13 106
nuclear@13 107 glVertex2f(x + w - b, y + b);
nuclear@13 108 glVertex2f(x + w, y);
nuclear@13 109 glVertex2f(x + w, y + h);
nuclear@13 110 glVertex2f(x + w - b, y + h - b);
nuclear@13 111 glEnd();
nuclear@13 112
nuclear@13 113 /*glBegin(GL_LINES);
nuclear@6 114 glColor4fv(tcol);
nuclear@6 115 glVertex2f(x, y + h);
nuclear@6 116 glVertex2f(x, y);
nuclear@6 117 glVertex2f(x, y);
nuclear@6 118 glVertex2f(x + w, y);
nuclear@6 119 glColor4fv(bcol);
nuclear@6 120 glVertex2f(x + w, y);
nuclear@6 121 glVertex2f(x + w, y + h);
nuclear@6 122 glVertex2f(x + w, y + h);
nuclear@6 123 glVertex2f(x, y + h);
nuclear@13 124 glEnd();*/
nuclear@6 125
nuclear@6 126 }
nuclear@6 127
nuclear@6 128 void imtk_draw_string(int x, int y, const char *str)
nuclear@6 129 {
nuclear@6 130 glRasterPos2i(x, y);
nuclear@6 131 while(*str) {
nuclear@6 132 glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, *str++);
nuclear@6 133 }
nuclear@6 134 }
nuclear@6 135
nuclear@6 136 int imtk_string_size(const char *str)
nuclear@6 137 {
nuclear@6 138 return glutBitmapLength(GLUT_BITMAP_HELVETICA_12, (const unsigned char*)str);
nuclear@6 139 }