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-rw-r--r--apps/plugins/pdbox/pdbox-gui.c809
1 files changed, 809 insertions, 0 deletions
diff --git a/apps/plugins/pdbox/pdbox-gui.c b/apps/plugins/pdbox/pdbox-gui.c
new file mode 100644
index 0000000..a03e97c
--- /dev/null
+++ b/apps/plugins/pdbox/pdbox-gui.c
@@ -0,0 +1,809 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2009 Wincent Balin
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "plugin.h"
+#include "pdbox.h"
+
+#include "lib/xlcd.h"
+
+/* Declare back- and foreground colors. */
+#define BGCOLOR (LCD_BLACK)
+#define FGCOLOR (LCD_WHITE)
+/* Button colors. */
+#define BTNCOLOR_DARK (LCD_DARKGRAY)
+#define BTNCOLOR_LIGHT (LCD_LIGHTGRAY)
+
+/* Variables in the main code. */
+extern char* filename;
+extern bool quit;
+
+/* Screen multiplier. */
+static float screen_multiplier;
+
+/* Displacement of the slanted corner in the contour of the number widget. */
+static int number_corner;
+
+/* Button flags. */
+static bool play_on;
+static bool previous_on;
+static bool next_on;
+static bool menu_on;
+static bool action_on;
+
+/* Pause flag. */
+static bool paused;
+
+
+/* Draw circle using midpoint circle algorithm.
+ Adapted from http://en.wikipedia.org/wiki/Midpoint_circle_algorithm. */
+void drawcircle(int x, int y, int r)
+{
+ int f = 1 - r;
+ int ddfx = 1;
+ int ddfy = -2 * r;
+ int xp = 0;
+ int yp = r;
+
+ /* Draw outer points. */
+ rb->lcd_drawpixel(x, y + r);
+ rb->lcd_drawpixel(x, y + r);
+ rb->lcd_drawpixel(x + r, y);
+ rb->lcd_drawpixel(x - r, y);
+
+ /* Calculate coordinates of points in one octant. */
+ while(xp < yp)
+ {
+ /* ddfx == 2 * xp + 1;
+ ddfy == -2 * yp;
+ f == xp*xp + yp*yp - r*r + 2*xp - yp + 1; */
+ if(f >= 0)
+ {
+ yp--;
+ ddfy += 2;
+ f += ddfy;
+ }
+
+ xp++;
+ ddfx += 2;
+ f += ddfx;
+
+ /* Draw pixels in all octants. */
+ rb->lcd_drawpixel(x + xp, y + yp);
+ rb->lcd_drawpixel(x + xp, y - yp);
+ rb->lcd_drawpixel(x - xp, y + yp);
+ rb->lcd_drawpixel(x - xp, y - yp);
+ rb->lcd_drawpixel(x + yp, y + xp);
+ rb->lcd_drawpixel(x + yp, y - xp);
+ rb->lcd_drawpixel(x - yp, y + xp);
+ rb->lcd_drawpixel(x - yp, y - xp);
+ }
+}
+
+/* Fill circle. */
+void fillcircle(int x, int y, int r)
+{
+ int f = 1 - r;
+ int ddfx = 1;
+ int ddfy = -2 * r;
+ int xp = 0;
+ int yp = r;
+
+ /* Draw outer points. */
+ rb->lcd_drawpixel(x, y + r);
+ rb->lcd_drawpixel(x, y + r);
+ rb->lcd_drawpixel(x + r, y);
+ rb->lcd_drawpixel(x - r, y);
+
+ /* Calculate coordinates of points in one octant. */
+ while(xp < yp)
+ {
+ /* ddfx == 2 * xp + 1;
+ ddfy == -2 * yp;
+ f == xp*xp + yp*yp - r*r + 2*xp - yp + 1; */
+ if(f >= 0)
+ {
+ yp--;
+ ddfy += 2;
+ f += ddfy;
+ }
+
+ xp++;
+ ddfx += 2;
+ f += ddfx;
+
+ /* Fill circle with horizontal lines. */
+ rb->lcd_hline(x - xp, x + xp, y - yp);
+ rb->lcd_hline(x - xp, x + xp, y + yp);
+ rb->lcd_hline(x - yp, x + yp, y - xp);
+ rb->lcd_hline(x - yp, x + yp, y + xp);
+ }
+
+ /* Draw last horizontal line (central one). */
+ rb->lcd_hline(x - r, x + r, y);
+}
+
+/* Initialize GUI. */
+void pd_gui_init(void)
+{
+ /* Reset button flags. */
+ play_on = false;
+ previous_on = false;
+ next_on = false;
+ menu_on = false;
+ action_on = false;
+
+ /* Unpause Pure Data. */
+ paused = false;
+
+ /* Calculate dimension factors. */
+ screen_multiplier = ((float) LCD_WIDTH) / 160.0f;
+ number_corner = 5 * screen_multiplier;
+
+ /* Set back- and foreground color. */
+ rb->lcd_set_background(BGCOLOR);
+ rb->lcd_set_foreground(FGCOLOR);
+
+ /* Clear background. */
+ rb->lcd_clear_display();
+
+ /* Update display. */
+ rb->lcd_update();
+}
+
+/* Load PD patch. */
+unsigned int pd_gui_load_patch(struct pd_widget* wg, unsigned int max_widgets)
+{
+ int fd;
+ char line[100];
+ char* saveptr;
+ unsigned int widgets = 0;
+
+ /* Open PD patch. */
+ fd = open(filename, O_RDONLY);
+
+ /* Check for I/O error. */
+ if(!fd)
+ {
+ /* Show error message and make plug-in quit. */
+ rb->splash(HZ, "Error opening .pd file!");
+ quit = true;
+ return 0;
+ }
+
+ /* Read lines from PD file. */
+ while(rb->read_line(fd, line, sizeof(line)) > 0)
+ {
+ /* Check whether we got too many widgets. */
+ if(widgets >= max_widgets)
+ {
+ rb->splash(HZ, "Too many widgets!");
+ quit = true;
+ return 0;
+ }
+
+ /* Search for key strings in the line. */
+ if((strstr(line, "floatatom") != NULL) &&
+ (strstr(line, "pod_") != NULL))
+ {
+ wg->id = PD_NUMBER;
+
+ strtok_r(line, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->x = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->y = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->w = 7 * atoi(strtok_r(NULL, " ", &saveptr)) *
+ screen_multiplier;
+ wg->h = 16 * screen_multiplier;
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strncpy(wg->name, strtok_r(NULL, " ", &saveptr), sizeof(wg->name));
+
+ /* We got one more widget. */
+ wg++;
+ widgets++;
+ }
+ else if((strstr(line, "symbolatom") != NULL) &&
+ (strstr(line, "pod_") != NULL))
+ {
+ wg->id = PD_SYMBOL;
+
+ strtok_r(line, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->x = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->y = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->w = 7 * atoi(strtok_r(NULL, " ", &saveptr)) *
+ screen_multiplier;
+ wg->h = 16 * screen_multiplier;
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strncpy(wg->name, strtok_r(NULL, " ", &saveptr), sizeof(wg->name));
+
+ /* We got one more widget. */
+ wg++;
+ widgets++;
+ }
+ else if((strstr(line, "vsl") != NULL) &&
+ (strstr(line, "pod_") != NULL))
+ {
+ wg->id = PD_VSLIDER;
+
+ strtok_r(line, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->x = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->y = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ strtok_r(NULL, " ", &saveptr);
+ wg->w = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->h = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->min = atoi(strtok_r(NULL, " ", &saveptr));
+ wg->max = atoi(strtok_r(NULL, " ", &saveptr));
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strncpy(wg->name, strtok_r(NULL, " ", &saveptr), sizeof(wg->name));
+
+ /* We got one more widget. */
+ wg++;
+ widgets++;
+ }
+ else if((strstr(line, "hsl") != NULL) &&
+ (strstr(line, "pod_") != NULL))
+ {
+ wg->id = PD_HSLIDER;
+
+ strtok_r(line, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->x = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->y = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ strtok_r(NULL, " ", &saveptr);
+ wg->w = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->h = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->min = atoi(strtok_r(NULL, " ", &saveptr));
+ wg->max = atoi(strtok_r(NULL, " ", &saveptr));
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strncpy(wg->name, strtok_r(NULL, " ", &saveptr), sizeof(wg->name));
+
+ /* We got one more widget. */
+ wg++;
+ widgets++;
+ }
+ else if((strstr(line, "vradio") != NULL) &&
+ (strstr(line, "pod_") != NULL))
+ {
+ wg->id = PD_VRADIO;
+
+ strtok_r(line, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->x = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->y = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ strtok_r(NULL, " ", &saveptr);
+ wg->w = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->min = 0;
+ wg->max = atoi(strtok_r(NULL, " ", &saveptr));
+ wg->h = wg->w * wg->max;
+ strtok_r(NULL, " ", &saveptr);
+ strncpy(wg->name, strtok_r(NULL, " ", &saveptr), sizeof(wg->name));
+ wg->max--;
+
+ /* We got one more widget. */
+ wg++;
+ widgets++;
+ }
+ else if((strstr(line, "hradio") != NULL) &&
+ (strstr(line, "pod_") != NULL))
+ {
+ wg->id = PD_HRADIO;
+
+ strtok_r(line, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->x = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->y = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ strtok_r(NULL, " ", &saveptr);
+ wg->h = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->min = 0;
+ wg->max = atoi(strtok_r(NULL, " ", &saveptr));
+ wg->w = wg->h * wg->max;
+ strtok_r(NULL, " ", &saveptr);
+ strncpy(wg->name, strtok_r(NULL, " ", &saveptr), sizeof(wg->name));
+ wg->max--;
+
+ /* We got one more widget. */
+ wg++;
+ widgets++;
+ }
+ else if((strstr(line, "bng") != NULL) &&
+ (strstr(line, "pod_") != NULL))
+ {
+ wg->id = PD_BANG;
+
+ strtok_r(line, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->x = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->y = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ strtok_r(NULL, " ", &saveptr);
+ wg->w = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->h = wg->w;
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ strncpy(wg->name, strtok_r(NULL, " ", &saveptr), sizeof(wg->name));
+ wg->min = 0;
+ wg->max = 1;
+
+ /* Clear timeout flag. */
+ wg->timeout = 0;
+
+ /* We got one more widget. */
+ wg++;
+ widgets++;
+ }
+ else if(strstr(line, "text") != NULL)
+ {
+ wg->id = PD_TEXT;
+
+ strtok_r(line, " ", &saveptr);
+ strtok_r(NULL, " ", &saveptr);
+ wg->x = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ wg->y = atoi(strtok_r(NULL, " ", &saveptr)) * screen_multiplier;
+ strncpy(wg->name, strtok_r(NULL, " ", &saveptr), sizeof(wg->name));
+ char* w = strtok_r(NULL, " ", &saveptr);
+ while(w != NULL)
+ {
+ strcat(wg->name, w);
+ strcat(wg->name, " ");
+ w = strtok_r(NULL, " ", &saveptr);
+ }
+ /* Cut off unneeded characters (';' and '\n'). */
+ int namelen = strlen(wg->name);
+ if(namelen > 1)
+ {
+ /* Cut off '\n'. */
+ wg->name[namelen-1] = '\0';
+ namelen--;
+ /* Cut the last semi-colon, if there is one. */
+ if(wg->name[namelen-1] == ';')
+ wg->name[namelen-1] = '\0';
+ }
+
+
+ /* We got one more widget. */
+ wg++;
+ widgets++;
+ }
+ }
+
+ /* Close PD patch. */
+ close(fd);
+
+ /* Return amount of loaded widgets. */
+ return widgets;
+}
+
+/* Draw standard user interface. */
+void pd_gui_draw_standard(void)
+{
+ /* Draw main circle. */
+ rb->lcd_set_foreground(FGCOLOR);
+ fillcircle(LCD_WIDTH / 2,
+ LCD_HEIGHT / 2,
+ 2 * MIN(LCD_WIDTH, LCD_HEIGHT) / 5);
+
+ /* Draw center circle. */
+ rb->lcd_set_foreground(action_on ? BTNCOLOR_DARK : BTNCOLOR_LIGHT);
+ fillcircle(LCD_WIDTH / 2,
+ LCD_HEIGHT / 2,
+ MIN(LCD_WIDTH, LCD_HEIGHT) / 8);
+
+ /* Draw pressed buttons. */
+ if(play_on)
+ fillcircle(LCD_WIDTH / 2,
+ 3 * LCD_HEIGHT / 4,
+ MIN(LCD_WIDTH, LCD_HEIGHT) / 8);
+
+ if(previous_on)
+ fillcircle(LCD_WIDTH / 3,
+ LCD_HEIGHT / 2,
+ MIN(LCD_WIDTH, LCD_HEIGHT) / 8);
+
+ if(next_on)
+ fillcircle(2 * LCD_WIDTH / 3 + 1,
+ LCD_HEIGHT / 2,
+ MIN(LCD_WIDTH, LCD_HEIGHT) / 8);
+
+ if(menu_on)
+ fillcircle(LCD_WIDTH / 2,
+ LCD_HEIGHT / 4,
+ MIN(LCD_WIDTH, LCD_HEIGHT) / 8);
+
+ /* Restore foreground color. */
+ rb->lcd_set_foreground(FGCOLOR);
+}
+
+/* Draw custom user interface. */
+void pd_gui_draw_custom(struct pd_widget* wg, unsigned int widgets)
+{
+ unsigned int i;
+ int j;
+ int v;
+
+ for(i = 0; i < widgets; wg++, i++)
+ {
+ switch(wg->id)
+ {
+ case PD_BANG:
+ /* Clear area to (re-)draw. */
+ rb->lcd_set_foreground(BGCOLOR);
+ rb->lcd_fillrect(wg->x, wg->y, wg->w, wg->h);
+ rb->lcd_set_foreground(FGCOLOR);
+ /* Draw border (rectangle). */
+ rb->lcd_drawrect(wg->x, wg->y, wg->w, wg->h);
+ /* Draw button (circle), being filled depending on value. */
+ if(((int) wg->value) == 0) /* Button not pressed. */
+ drawcircle(wg->x + wg->w/2,
+ wg->y + wg->w/2,
+ wg->w/2 - 1);
+ else /* Button pressed. */
+ fillcircle(wg->x + wg->w/2,
+ wg->y + wg->w/2,
+ wg->w/2 - 1);
+ break;
+
+ case PD_VSLIDER:
+ /* Clear area to (re-)draw. */
+ rb->lcd_set_foreground(BGCOLOR);
+ rb->lcd_fillrect(wg->x, wg->y, wg->w, wg->h);
+ rb->lcd_set_foreground(FGCOLOR);
+ /* Draw border. */
+ rb->lcd_drawrect(wg->x, wg->y, wg->w, wg->h);
+ /* Draw slider. */
+ v = ((float) wg->h / (wg->max - wg->min)) *
+ (wg->max - wg->value);
+ rb->lcd_fillrect(wg->x, wg->y + v, wg->w, 2);
+ break;
+
+ case PD_HSLIDER:
+ /* Clear area to (re-)draw. */
+ rb->lcd_set_foreground(BGCOLOR);
+ rb->lcd_fillrect(wg->x, wg->y, wg->w, wg->h);
+ rb->lcd_set_foreground(FGCOLOR);
+ /* Draw border. */
+ rb->lcd_drawrect(wg->x, wg->y, wg->w, wg->h);
+ /* Draw slider. */
+ v = ((float) wg->w / (wg->max - wg->min)) *
+ (wg->max - wg->value);
+ rb->lcd_fillrect(wg->x + wg->w - v, wg->y, 2, wg->h);
+ break;
+
+ case PD_HRADIO:
+ /* Clear area to (re-)draw. */
+ rb->lcd_set_foreground(BGCOLOR);
+ rb->lcd_fillrect(wg->x, wg->y, wg->w, wg->h);
+ rb->lcd_set_foreground(FGCOLOR);
+ for(j = 0; j < wg->w / wg->h; j++)
+ {
+ /* Draw border. */
+ rb->lcd_drawrect(wg->x + wg->h * j, wg->y, wg->h, wg->h);
+ /* If marked, draw button. */
+ if(((int) wg->value) == j)
+ rb->lcd_fillrect(wg->x + wg->h * j + 2, wg->y + 2,
+ wg->h - 4, wg->h - 4);
+ }
+ break;
+
+ case PD_VRADIO:
+ /* Clear area to (re-)draw. */
+ rb->lcd_set_foreground(BGCOLOR);
+ rb->lcd_fillrect(wg->x, wg->y, wg->w, wg->h);
+ rb->lcd_set_foreground(FGCOLOR);
+ for(j = 0; j < wg->h / wg->w; j++)
+ {
+ /* Draw border. */
+ rb->lcd_drawrect(wg->x, wg->y + wg->w * j, wg->w, wg->w);
+ /* If marked, draw button. */
+ if(((int) wg->value) == j)
+ rb->lcd_fillrect(wg->x + 2, wg->y + wg->w * j + 2,
+ wg->w - 4, wg->w - 4);
+ }
+ break;
+
+ case PD_NUMBER:
+ rb->lcd_hline(wg->x,
+ wg->x + wg->w - number_corner,
+ wg->y);
+ rb->lcd_drawline(wg->x + wg->w - number_corner,
+ wg->y,
+ wg->x + wg->w,
+ wg->y + number_corner);
+ rb->lcd_vline(wg->x + wg->w,
+ wg->y + number_corner,
+ wg->y + wg->h);
+ rb->lcd_hline(wg->x,
+ wg->x + wg->w,
+ wg->y + wg->h);
+ rb->lcd_vline(wg->x,
+ wg->y,
+ wg->y + wg->h);
+ char sbuf[12];
+ ftoan(wg->value, sbuf, 12);
+ rb->lcd_putsxy(wg->x + 2, wg->y + 2, sbuf);
+ break;
+
+ case PD_TEXT:
+ rb->lcd_putsxy(wg->x + 2, wg->y, wg->name);
+ break;
+
+ case PD_SYMBOL:
+ break;
+ }
+ }
+}
+
+/* Draw the GUI. */
+void pd_gui_draw(struct pd_widget* wg, unsigned int widgets)
+{
+ /* Draw GUI. */
+ if(widgets == 0)
+ pd_gui_draw_standard();
+ else
+ pd_gui_draw_custom(wg, widgets);
+
+ /* Update display. */
+ rb->lcd_update();
+}
+
+/* Parse buttons, if needed, send messages to the Pure Data code. */
+bool pd_gui_parse_buttons(unsigned int widgets)
+{
+ static long last_bv = 0;
+ long bv = rb->button_get(false);
+
+ /* Extract differences between current and previous button values. */
+ long diff_bv = bv ^ last_bv;
+
+ /* If no difference since the last button value, return here. */
+ if(diff_bv == 0)
+ return false;
+
+ /* Query whether we have to quit. */
+ if(bv == PDPOD_QUIT)
+ {
+ /* No need to send the quitting message to Pure Data core,
+ as setting the quit flag ends threads and jumps
+ to the cleanup code. */
+ quit = true;
+ return false;
+ }
+
+ /* Check the action (shift, mode) button. */
+ if(diff_bv & PDPOD_ACTION)
+ {
+ if(bv & PDPOD_ACTION)
+ {
+ SEND_TO_CORE("b;\n");
+
+ if(widgets == 0)
+ action_on = true;
+ }
+ else
+ {
+ if(widgets == 0)
+ action_on = false;
+ }
+ }
+
+ /* Check play button. */
+ if(diff_bv & PDPOD_PLAY)
+ {
+ if(bv & PDPOD_PLAY)
+ {
+ /* Action + play = pause. */
+ if(action_on)
+ {
+ /* Switch paused state. */
+ paused = !paused;
+ SEND_TO_CORE(paused ? "p 1;\n" : "p 0;\n");
+ }
+
+ if(!action_on && !paused)
+ SEND_TO_CORE("d 1;\n");
+
+ if(widgets == 0)
+ play_on = true;
+ }
+ else
+ {
+ if(!action_on && !paused)
+ SEND_TO_CORE("d 0;\n");
+
+ if(widgets == 0)
+ play_on = false;
+ }
+ }
+
+ /* Check rewind (previous) button. */
+ if(diff_bv & PDPOD_PREVIOUS)
+ {
+ if(bv & PDPOD_PREVIOUS)
+ {
+ if(!paused)
+ SEND_TO_CORE("w 1;\n");
+
+ if(widgets == 0)
+ previous_on = true;
+ }
+ else
+ {
+ if(!paused)
+ SEND_TO_CORE("w 0;\n");
+
+ if(widgets == 0)
+ previous_on = false;
+ }
+ }
+
+ /* Check forward (next) button. */
+ if(diff_bv & PDPOD_NEXT)
+ {
+ if(bv & PDPOD_NEXT)
+ {
+ if(!paused)
+ SEND_TO_CORE("f 1;\n");
+
+ if(widgets == 0)
+ next_on = true;
+ }
+ else
+ {
+ if(!paused)
+ SEND_TO_CORE("f 0;\n");
+
+ if(widgets == 0)
+ next_on = false;
+ }
+ }
+
+ /* Check menu (select) button. */
+ if(diff_bv & PDPOD_MENU)
+ {
+ if(bv & PDPOD_MENU)
+ {
+ if(!action_on && !paused)
+ SEND_TO_CORE("m 1;\n");
+
+ if(widgets == 0)
+ menu_on = true;
+ }
+ else
+ {
+ if(!action_on && !paused)
+ SEND_TO_CORE("m 0;\n");
+
+ if(widgets == 0)
+ menu_on = false;
+ }
+ }
+
+ /* Check scroll right (or up) button. */
+ if(diff_bv & PDPOD_WHEELRIGHT)
+ {
+ if(bv & PDPOD_WHEELRIGHT)
+ {
+ SEND_TO_CORE(action_on ? "r 10;\n" : "r 1;\n");
+ }
+ }
+
+ /* Check scroll left (or down) button. */
+ if(diff_bv & PDPOD_WHEELLEFT)
+ {
+ if(bv & PDPOD_WHEELLEFT)
+ {
+ SEND_TO_CORE(action_on ? "l 10;\n" : "l 1;\n");
+ }
+ }
+
+ /* Backup button value. */
+ last_bv = bv;
+
+ /* GUI has to be updated. */
+ return true;
+}
+
+/* Emulate timer for widgets which use time-out. */
+bool pd_gui_apply_timeouts(struct pd_widget* wg, unsigned int widgets)
+{
+ unsigned int i;
+ bool result = false;
+
+ for(i = 0; i < widgets; wg++, i++)
+ {
+ if(wg->id == PD_BANG)
+ {
+ if(wg->timeout > 0)
+ {
+ /* Decrement timeout value. */
+ wg->timeout--;
+
+ /* If zero reached, clear value. */
+ if(wg->timeout == 0)
+ {
+ wg->value = 0;
+ result = true;
+ }
+ }
+ }
+ }
+
+ return result;
+}
+
+/* Parse and apply message from the Pure Data core. */
+void pd_gui_parse_message(struct datagram* dg,
+ struct pd_widget* wg,
+ unsigned int widgets)
+{
+ unsigned int i;
+ char* saveptr;
+ char* object = NULL;
+ char* argument = NULL;
+ float argvalue = 0;
+
+ object = strtok_r(dg->data, " ", &saveptr);
+ argument = strtok_r(NULL, " ;\n", &saveptr);
+
+ if(argument != NULL)
+ argvalue = atof(argument);
+
+ for(i = 0; i < widgets; wg++, i++)
+ {
+ if(strncmp(object, wg->name, strlen(wg->name)) == 0)
+ {
+ /* If object not a number, set boundaries. */
+ if(wg->id != PD_NUMBER)
+ {
+ if(argvalue > wg->max)
+ argvalue = wg->max;
+ else if(argvalue < wg->min)
+ argvalue = wg->min;
+ }
+
+ /* Set value. */
+ if(wg->id == PD_BANG)
+ {
+ wg->value = 1;
+ wg->timeout = HZ / 10;
+ }
+ else
+ {
+ wg->value = argvalue;
+ }
+ }
+ }
+}
generated by cgit v1.1 at 2026-04-25 10:35:03 +0000