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annotate src/imtk/imtk.c @ 10:1496aae2e7d4

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- simplified build by including dependences in the source tree - added make dep tracking - added mingw cross-build rules - added readme & licence
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 31 Jul 2023 18:58:56 +0300
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nuclear@10 1 #include <stdio.h>
nuclear@10 2 #include <stdlib.h>
nuclear@10 3 #include <string.h>
nuclear@10 4 #include <ctype.h>
nuclear@10 5 #include <assert.h>
nuclear@10 6 #ifndef __APPLE__
nuclear@10 7 #include <GL/glut.h>
nuclear@10 8 #else
nuclear@10 9 #include <GLUT/glut.h>
nuclear@10 10 #endif
nuclear@10 11 #include "imtk.h"
nuclear@10 12 #include "state.h"
nuclear@10 13 #include "draw.h"
nuclear@10 14
nuclear@10 15 void imtk_post_redisplay(void)
nuclear@10 16 {
nuclear@10 17 glutPostRedisplay();
nuclear@10 18 }
nuclear@10 19
nuclear@10 20 void imtk_begin(void)
nuclear@10 21 {
nuclear@10 22 int width, height;
nuclear@10 23
nuclear@10 24 glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
nuclear@10 25
nuclear@10 26 glDisable(GL_DEPTH_TEST);
nuclear@10 27 glDisable(GL_STENCIL_TEST);
nuclear@10 28 glDisable(GL_ALPHA_TEST);
nuclear@10 29 glDisable(GL_TEXTURE_1D);
nuclear@10 30 glDisable(GL_TEXTURE_2D);
nuclear@10 31 glDisable(GL_CULL_FACE);
nuclear@10 32 glDisable(GL_SCISSOR_TEST);
nuclear@10 33 glDisable(GL_LIGHTING);
nuclear@10 34 glEnable(GL_BLEND);
nuclear@10 35 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
nuclear@10 36
nuclear@10 37
nuclear@10 38 imtk_get_viewport(&width, &height);
nuclear@10 39
nuclear@10 40 glMatrixMode(GL_PROJECTION);
nuclear@10 41 glPushMatrix();
nuclear@10 42 glLoadIdentity();
nuclear@10 43 glTranslatef(-1, 1, 0);
nuclear@10 44 glScalef(2.0 / width, -2.0 / height, 1.0);
nuclear@10 45
nuclear@10 46 glMatrixMode(GL_MODELVIEW);
nuclear@10 47 glPushMatrix();
nuclear@10 48 glLoadIdentity();
nuclear@10 49 }
nuclear@10 50
nuclear@10 51 void imtk_end(void)
nuclear@10 52 {
nuclear@10 53 glMatrixMode(GL_PROJECTION);
nuclear@10 54 glPopMatrix();
nuclear@10 55 glMatrixMode(GL_MODELVIEW);
nuclear@10 56 glPopMatrix();
nuclear@10 57
nuclear@10 58 glPopAttrib();
nuclear@10 59 }
nuclear@10 60
nuclear@10 61 void imtk_label(const char *str, int x, int y)
nuclear@10 62 {
nuclear@10 63 if(x == IMTK_AUTO || y == IMTK_AUTO) {
nuclear@10 64 imtk_layout_get_pos(&x, &y);
nuclear@10 65 }
nuclear@10 66
nuclear@10 67 glColor4fv(imtk_get_color(IMTK_TEXT_COLOR));
nuclear@10 68 imtk_draw_string(x, y + 14, str);
nuclear@10 69 imtk_layout_advance(imtk_string_size(str), 12);
nuclear@10 70 }