imtk

annotate src/imtk.c @ 20:c7a7ddbe7714

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half-arsed automatic layout
author John Tsiombikas <nuclear@siggraph.org>
date Sat, 30 Apr 2011 05:23:59 +0300
parents 9c7987064bb0
children 3138c38433e2
rev   line source
nuclear@3 1 #include <stdio.h>
nuclear@2 2 #include <stdlib.h>
nuclear@1 3 #include <string.h>
nuclear@2 4 #include <ctype.h>
nuclear@0 5 #include <assert.h>
nuclear@0 6 #ifndef __APPLE__
nuclear@0 7 #include <GL/glut.h>
nuclear@0 8 #else
nuclear@0 9 #include <GLUT/glut.h>
nuclear@0 10 #endif
nuclear@0 11 #include "imtk.h"
nuclear@7 12 #include "state.h"
nuclear@13 13 #include "draw.h"
nuclear@1 14
nuclear@0 15
nuclear@13 16 void imtk_post_redisplay(void)
nuclear@13 17 {
nuclear@13 18 glutPostRedisplay();
nuclear@13 19 }
nuclear@13 20
nuclear@0 21 void imtk_begin(void)
nuclear@0 22 {
nuclear@7 23 int width, height;
nuclear@7 24
nuclear@20 25 glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
nuclear@20 26
nuclear@20 27 glDisable(GL_DEPTH_TEST);
nuclear@20 28 glDisable(GL_STENCIL_TEST);
nuclear@20 29 glDisable(GL_ALPHA_TEST);
nuclear@20 30 glDisable(GL_TEXTURE_1D);
nuclear@20 31 glDisable(GL_TEXTURE_2D);
nuclear@20 32 glDisable(GL_CULL_FACE);
nuclear@20 33 glDisable(GL_SCISSOR_TEST);
nuclear@20 34 glDisable(GL_LIGHTING);
nuclear@20 35 glEnable(GL_BLEND);
nuclear@20 36 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
nuclear@20 37
nuclear@20 38
nuclear@7 39 imtk_get_viewport(&width, &height);
nuclear@7 40
nuclear@0 41 glMatrixMode(GL_PROJECTION);
nuclear@0 42 glPushMatrix();
nuclear@0 43 glLoadIdentity();
nuclear@0 44 glTranslatef(-1, 1, 0);
nuclear@7 45 glScalef(2.0 / width, -2.0 / height, 1.0);
nuclear@2 46
nuclear@2 47 glMatrixMode(GL_MODELVIEW);
nuclear@2 48 glPushMatrix();
nuclear@2 49 glLoadIdentity();
nuclear@0 50 }
nuclear@0 51
nuclear@0 52 void imtk_end(void)
nuclear@0 53 {
nuclear@0 54 glMatrixMode(GL_PROJECTION);
nuclear@0 55 glPopMatrix();
nuclear@2 56 glMatrixMode(GL_MODELVIEW);
nuclear@2 57 glPopMatrix();
nuclear@20 58
nuclear@20 59 glPopAttrib();
nuclear@0 60 }
nuclear@0 61
nuclear@13 62 void imtk_label(const char *str, int x, int y)
nuclear@0 63 {
nuclear@20 64 if(x == IMTK_AUTO || y == IMTK_AUTO) {
nuclear@20 65 imtk_layout_get_pos(&x, &y);
nuclear@20 66 }
nuclear@20 67
nuclear@13 68 glColor4fv(imtk_get_color(IMTK_TEXT_COLOR));
nuclear@20 69 imtk_draw_string(x, y + 15, str);
nuclear@20 70 imtk_layout_advance(imtk_string_size(str), 12);
nuclear@0 71 }
nuclear@0 72
nuclear@1 73
nuclear@20 74 static int box[4], span[4];
nuclear@20 75 static int spacing;
nuclear@20 76 static int layout;
nuclear@20 77
nuclear@20 78 void imtk_layout_start(int x, int y, int sp, int dir)
nuclear@4 79 {
nuclear@20 80 box[0] = span[0] = x;
nuclear@20 81 box[1] = span[1] = y;
nuclear@20 82 box[2] = box[3] = span[2] = span[3] = 0;
nuclear@20 83 spacing = sp;
nuclear@20 84 layout = dir;
nuclear@20 85 }
nuclear@4 86
nuclear@20 87 void imtk_layout_dir(int dir)
nuclear@20 88 {
nuclear@20 89 layout = dir;
nuclear@20 90 if(dir == IMTK_VERTICAL) {
nuclear@20 91 imtk_layout_newline();
nuclear@4 92 }
nuclear@4 93 }
nuclear@20 94
nuclear@20 95 void imtk_layout_advance(int width, int height)
nuclear@20 96 {
nuclear@20 97 int max_span_y, max_box_y;
nuclear@20 98
nuclear@20 99 box[2] += width + spacing;
nuclear@20 100 span[2] += width + spacing;
nuclear@20 101
nuclear@20 102 if(height > span[3]) {
nuclear@20 103 span[3] = height;
nuclear@20 104 }
nuclear@20 105
nuclear@20 106 max_span_y = span[1] + span[3];
nuclear@20 107 max_box_y = box[1] + box[3];
nuclear@20 108
nuclear@20 109 if(max_span_y > max_box_y) {
nuclear@20 110 box[3] = max_span_y - box[1];
nuclear@20 111 }
nuclear@20 112
nuclear@20 113 if(layout == IMTK_VERTICAL) {
nuclear@20 114 imtk_layout_newline();
nuclear@20 115 }
nuclear@20 116 }
nuclear@20 117
nuclear@20 118 void imtk_layout_newline(void)
nuclear@20 119 {
nuclear@20 120 span[0] = box[0];
nuclear@20 121 span[1] = box[1] + box[3] + spacing;
nuclear@20 122 span[2] = span[3] = 0;
nuclear@20 123 }
nuclear@20 124
nuclear@20 125 void imtk_layout_get_pos(int *x, int *y)
nuclear@20 126 {
nuclear@20 127 *x = span[0] + span[2];
nuclear@20 128 *y = span[1];
nuclear@20 129 }
nuclear@20 130
nuclear@20 131 void imtk_layout_get_bounds(int *bbox)
nuclear@20 132 {
nuclear@20 133 memcpy(bbox, box, sizeof box);
nuclear@20 134 }