imtk
changeset 3:038e5577d527
added slider and progress bar widgets
author | John Tsiombikas <nuclear@member.fsf.org> |
---|---|
date | Fri, 31 Dec 2010 18:10:13 +0200 |
parents | 3d661dd17af3 |
children | 00a4ea4ee6dc |
files | src/imtk.c src/imtk.h test.c |
diffstat | 3 files changed, 143 insertions(+), 3 deletions(-) [+] |
line diff
1.1 --- a/src/imtk.c Fri Dec 31 01:54:53 2010 +0200 1.2 +++ b/src/imtk.c Fri Dec 31 18:10:13 2010 +0200 1.3 @@ -1,3 +1,4 @@ 1.4 +#include <stdio.h> 1.5 #include <stdlib.h> 1.6 #include <string.h> 1.7 #include <ctype.h> 1.8 @@ -11,6 +12,9 @@ 1.9 1.10 #define CHECKBOX_SIZE 14 1.11 #define TEXTBOX_SIZE 100 1.12 +#define SLIDER_SIZE 100 1.13 +#define THUMB_WIDTH 10 1.14 +#define THUMB_HEIGHT 20 1.15 1.16 enum { 1.17 FRAME_OUTSET, 1.18 @@ -30,6 +34,8 @@ 1.19 static void calc_button_size(const char *label, int *wret, int *hret); 1.20 static void draw_checkbox(int id, const char *label, int x, int y, int state); 1.21 static void draw_textbox(int id, const char *text, int x, int y); 1.22 +static void draw_slider(int id, float pos, float min, float max, int x, int y); 1.23 +static void draw_progress(int id, float pos, int x, int y); 1.24 static void draw_string(int x, int y, const char *str); 1.25 static int string_size(const char *str); 1.26 static void draw_frame(int x, int y, int w, int h, int style); 1.27 @@ -45,7 +51,7 @@ 1.28 }; 1.29 1.30 static int scr_width = 1, scr_height = 1; 1.31 -static int mousex, mousey, mouse_bnmask; 1.32 +static int mousex, mousey, prevx, mouse_bnmask; 1.33 static int active = -1, hot = -1, input = -1; 1.34 1.35 static struct key_node *key_list, *key_tail; 1.36 @@ -249,9 +255,61 @@ 1.37 draw_textbox(id, textbuf, x, y); 1.38 } 1.39 1.40 +float imtk_slider(int id, float pos, float min, float max, int x, int y) 1.41 +{ 1.42 + int thumb_x, thumb_y, over = 0; 1.43 + float range = max - min; 1.44 + 1.45 + assert(id >= 0); 1.46 + 1.47 + pos = (pos - min) / range; 1.48 + if(pos < 0.0) pos = 0.0; 1.49 + if(pos > 1.0) pos = 1.0; 1.50 + 1.51 + thumb_x = x + SLIDER_SIZE * pos - THUMB_WIDTH / 2; 1.52 + thumb_y = y - THUMB_HEIGHT / 2; 1.53 + 1.54 + if(hit_test(thumb_x, thumb_y, THUMB_WIDTH, THUMB_HEIGHT)) { 1.55 + set_hot(id); 1.56 + over = 1; 1.57 + } 1.58 + 1.59 + if(mouse_bnmask & (1 << IMTK_LEFT_BUTTON)) { 1.60 + if(over && hot == id) { 1.61 + if(active != id) { 1.62 + prevx = mousex; 1.63 + } 1.64 + set_active(id); 1.65 + } 1.66 + } else { 1.67 + if(active == id) { 1.68 + set_active(-1); 1.69 + } 1.70 + } 1.71 + 1.72 + if(active == id) { 1.73 + float dx = (float)(mousex - prevx) / (float)SLIDER_SIZE; 1.74 + pos += dx; 1.75 + prevx = mousex; 1.76 + 1.77 + if(pos < 0.0) pos = 0.0; 1.78 + if(pos > 1.0) pos = 1.0; 1.79 + } 1.80 + 1.81 + draw_slider(id, pos, min, max, x, y); 1.82 + return pos * range + min; 1.83 +} 1.84 + 1.85 +void imtk_progress(int id, float pos, int x, int y) 1.86 +{ 1.87 + draw_progress(id, pos, x, y); 1.88 +} 1.89 + 1.90 static void set_active(int id) 1.91 { 1.92 - active = id; 1.93 + if(id == -1 || hot == id) { 1.94 + active = id; 1.95 + } 1.96 } 1.97 1.98 static int set_hot(int id) 1.99 @@ -368,6 +426,76 @@ 1.100 draw_frame(x, y, TEXTBOX_SIZE, 20, FRAME_INSET); 1.101 } 1.102 1.103 +static void draw_slider(int id, float pos, float min, float max, int x, int y) 1.104 +{ 1.105 + float range = max - min; 1.106 + int thumb_x, thumb_y; 1.107 + char buf[32]; 1.108 + 1.109 + thumb_x = x + SLIDER_SIZE * pos - THUMB_WIDTH / 2; 1.110 + thumb_y = y - THUMB_HEIGHT / 2; 1.111 + 1.112 + /* draw trough */ 1.113 + glBegin(GL_QUADS); 1.114 + glColor3fv(colors[IMTK_BASE_COLOR]); 1.115 + glVertex2f(x, y - 2); 1.116 + glVertex2f(x + SLIDER_SIZE, y - 2); 1.117 + glVertex2f(x + SLIDER_SIZE, y + 2); 1.118 + glVertex2f(x, y + 2); 1.119 + glEnd(); 1.120 + draw_frame(x, y - 2, SLIDER_SIZE, 4, FRAME_INSET); 1.121 + 1.122 + if(hit_test(thumb_x, thumb_y, THUMB_WIDTH, THUMB_HEIGHT)) { 1.123 + glColor3fv(colors[IMTK_FOCUS_COLOR]); 1.124 + } else { 1.125 + glColor3fv(colors[IMTK_BASE_COLOR]); 1.126 + } 1.127 + 1.128 + /* draw handle */ 1.129 + glBegin(GL_QUADS); 1.130 + glVertex2f(thumb_x, thumb_y); 1.131 + glVertex2f(thumb_x + THUMB_WIDTH, thumb_y); 1.132 + glVertex2f(thumb_x + THUMB_WIDTH, thumb_y + THUMB_HEIGHT); 1.133 + glVertex2f(thumb_x, thumb_y + THUMB_HEIGHT); 1.134 + glEnd(); 1.135 + draw_frame(thumb_x, thumb_y, THUMB_WIDTH, THUMB_HEIGHT, FRAME_OUTSET); 1.136 + 1.137 + /* draw display */ 1.138 + sprintf(buf, "%.3f", pos * range + min); 1.139 + glColor3fv(colors[IMTK_TEXT_COLOR]); 1.140 + draw_string(x + SLIDER_SIZE + THUMB_WIDTH / 2 + 2, y + 4, buf); 1.141 +} 1.142 + 1.143 +static void draw_progress(int id, float pos, int x, int y) 1.144 +{ 1.145 + int bar_size = SLIDER_SIZE * pos; 1.146 + 1.147 + if(pos < 0.0) pos = 0.0; 1.148 + if(pos > 1.0) pos = 1.0; 1.149 + 1.150 + /* through */ 1.151 + glBegin(GL_QUADS); 1.152 + glColor3fv(colors[IMTK_BASE_COLOR]); 1.153 + glVertex2f(x - 1, y - 1); 1.154 + glVertex2f(x + SLIDER_SIZE + 1, y - 1); 1.155 + glVertex2f(x + SLIDER_SIZE + 1, y + 17); 1.156 + glVertex2f(x - 1, y + 17); 1.157 + glEnd(); 1.158 + draw_frame(x - 1, y - 1, SLIDER_SIZE + 2, 17, FRAME_INSET); 1.159 + 1.160 + if(pos > 0.0) { 1.161 + /* bar */ 1.162 + glBegin(GL_QUADS); 1.163 + glColor3fv(colors[IMTK_BASE_COLOR]); 1.164 + glVertex2f(x, y); 1.165 + glVertex2f(x + bar_size, y); 1.166 + glVertex2f(x + bar_size, y + 15); 1.167 + glVertex2f(x, y + 15); 1.168 + glEnd(); 1.169 + draw_frame(x, y, bar_size, 15, FRAME_OUTSET); 1.170 + } 1.171 +} 1.172 + 1.173 static void draw_string(int x, int y, const char *str) 1.174 { 1.175 glRasterPos2i(x, y);
2.1 --- a/src/imtk.h Fri Dec 31 01:54:53 2010 +0200 2.2 +++ b/src/imtk.h Fri Dec 31 18:10:13 2010 +0200 2.3 @@ -33,9 +33,10 @@ 2.4 void imtk_begin(void); 2.5 void imtk_end(void); 2.6 2.7 -void imtk_window(int id, const char *title, int x, int y, int width, int height); 2.8 int imtk_button(int id, const char *label, int x, int y); 2.9 int imtk_checkbox(int id, const char *label, int x, int y, int state); 2.10 void imtk_textbox(int id, char *textbuf, size_t buf_sz, int x, int y); 2.11 +float imtk_slider(int id, float pos, float min, float max, int x, int y); 2.12 +void imtk_progress(int id, float pos, int x, int y); 2.13 2.14 #endif /* IMTK_H_ */
3.1 --- a/test.c Fri Dec 31 01:54:53 2010 +0200 3.2 +++ b/test.c Fri Dec 31 18:10:13 2010 +0200 3.3 @@ -19,6 +19,7 @@ 3.4 void motion(int x, int y); 3.5 3.6 int xsz, ysz; 3.7 +float angle; 3.8 3.9 int main(int argc, char **argv) 3.10 { 3.11 @@ -69,6 +70,7 @@ 3.12 glLoadIdentity(); 3.13 glTranslatef(0, 0, -8); 3.14 glRotatef(25, 1, 0, 0); 3.15 + glRotatef(angle, 0, 1, 0); 3.16 3.17 glFrontFace(GL_CW); 3.18 glutSolidTeapot(1.0); 3.19 @@ -89,6 +91,7 @@ 3.20 static int bnshow; 3.21 static char textbuf[256]; 3.22 static char textbuf2[256]; 3.23 + static float val; 3.24 3.25 imtk_begin(); 3.26 3.27 @@ -122,6 +125,14 @@ 3.28 } 3.29 } 3.30 3.31 + val = imtk_slider(IMUID, angle, 0.0, 360.0, 30, 390); 3.32 + if(val != angle) { 3.33 + angle = val; 3.34 + glutPostRedisplay(); 3.35 + } 3.36 + 3.37 + imtk_progress(IMUID, val / 360.0, 30, 420); 3.38 + 3.39 if(imtk_button(IMUID, "Quit", 30, 500)) { 3.40 exit(0); 3.41 }