William Ferrell
f5a5e9653b
Passed *every* piece of source in this project through indent. I'm setting things up with ctags soon and am actually going to *gasp* use a nice programming environment to continue development in. :)
453 lines
12 KiB
C
453 lines
12 KiB
C
/*
|
|
render.c
|
|
|
|
Draws screens on the LCD.
|
|
|
|
This needs to be greatly expanded and redone for greater flexibility.
|
|
For example, it should support multiple screen sizes, more flexible
|
|
widgets, and multiple simultaneous screens.
|
|
|
|
This will probably take a while to do. :(
|
|
|
|
|
|
THIS FILE IS MESSY! Anyone care to rewrite it nicely? Please?? :)
|
|
|
|
*/
|
|
|
|
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
|
|
#include "../shared/debug.h"
|
|
#include "../shared/LL.h"
|
|
|
|
#include "drivers/lcd.h"
|
|
|
|
#include "screen.h"
|
|
#include "screenlist.h"
|
|
#include "widget.h"
|
|
#include "render.h"
|
|
|
|
|
|
|
|
int heartbeat = HEART_OPEN;
|
|
int backlight = BACKLIGHT_OPEN;
|
|
int backlight_state = BACKLIGHT_OPEN;
|
|
int backlight_brightness = 255;
|
|
int backlight_off_brightness = 0;
|
|
int output_state = 0;
|
|
|
|
static int reset;
|
|
|
|
#define BUFSIZE 1024
|
|
|
|
static int draw_frame (LL * list, char fscroll, int left, int top, int right, int bottom, int fwid, int fhgt, int fspeed, int timer);
|
|
|
|
|
|
int
|
|
draw_screen (screen * s, int timer)
|
|
{
|
|
static screen *old_s = NULL;
|
|
int tmp = 0;
|
|
|
|
//debug("Render...\n");
|
|
//return 0;
|
|
|
|
reset = 1;
|
|
|
|
//debug("draw_screen: %8x, %i\n", (int)s, timer);
|
|
|
|
if (!s)
|
|
return -1;
|
|
|
|
if (s == old_s)
|
|
reset = 0;
|
|
old_s = s;
|
|
|
|
|
|
|
|
lcd.clear ();
|
|
|
|
|
|
switch (backlight_state) {
|
|
case BACKLIGHT_OFF:
|
|
lcd.backlight (backlight_off_brightness);
|
|
break;
|
|
case BACKLIGHT_ON:
|
|
lcd.backlight (backlight_brightness);
|
|
break;
|
|
default:
|
|
if (backlight_state & BACKLIGHT_FLASH) {
|
|
tmp = (!((timer & 7) == 7));
|
|
if (backlight_state & 1)
|
|
lcd.backlight (tmp ? backlight_brightness : backlight_off_brightness);
|
|
//lcd.backlight(backlight_brightness * (!((timer&7) == 7)));
|
|
else
|
|
lcd.backlight (!tmp ? backlight_brightness : backlight_off_brightness);
|
|
//lcd.backlight(backlight_brightness * ((timer&7) == 7));
|
|
} else if (backlight_state & BACKLIGHT_BLINK) {
|
|
tmp = (!((timer & 14) == 14));
|
|
if (backlight_state & 1)
|
|
lcd.backlight (tmp ? backlight_brightness : backlight_off_brightness);
|
|
//lcd.backlight(backlight_brightness * (!((timer&14) == 14)));
|
|
else
|
|
lcd.backlight (!tmp ? backlight_brightness : backlight_off_brightness);
|
|
//lcd.backlight(backlight_brightness * ((timer&14) == 14));
|
|
}
|
|
break;
|
|
}
|
|
|
|
lcd.output (output_state);
|
|
|
|
draw_frame (s->widgets, 'v', 0, 0, lcd.wid, lcd.hgt, s->wid, s->hgt, s->duration / s->hgt, timer);
|
|
|
|
|
|
//debug("draw_screen done\n");
|
|
|
|
|
|
if (heartbeat) {
|
|
if ((s->heartbeat == 1) || heartbeat == HEART_ON) {
|
|
// Set this to pulsate like a real heart beat...
|
|
// (binary is fun... :)
|
|
lcd.icon (!((timer + 4) & 5), 0);
|
|
lcd.chr (lcd.wid, 1, 0);
|
|
}
|
|
if ((s->heartbeat == 2) && heartbeat != HEART_OFF) {
|
|
char *phases = "-\\|/";
|
|
lcd.chr (lcd.wid, 1, phases[timer & 3]);
|
|
}
|
|
}
|
|
|
|
lcd.flush ();
|
|
|
|
//debug("draw_screen: %8x, %i\n", s, timer);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int
|
|
draw_frame (LL * list, char fscroll, int left, int top, int right, int bottom, int fwid, int fhgt, int fspeed, int timer)
|
|
{
|
|
char str[BUFSIZE]; // scratch buffer
|
|
widget *w;
|
|
|
|
int wid, hgt; // Width and height of visible frame area
|
|
int x, y;
|
|
int fx, fy; // Scrolling offset for the frame...
|
|
int length, speed;
|
|
//int lines;
|
|
|
|
int reset = 1;
|
|
|
|
wid = right - left; // This is the size of the visible frame area
|
|
hgt = bottom - top;
|
|
|
|
fx = 0;
|
|
fy = 0;
|
|
if (fscroll == 'v') {
|
|
|
|
if (fspeed > 0)
|
|
fy = (timer - fspeed) / fspeed;
|
|
if (fspeed < 0)
|
|
fy = (-fspeed) * timer;
|
|
if (fy < 0)
|
|
fy = 0;
|
|
|
|
// Make sure the whole frame gets displayed, at least...
|
|
if (!screenlist_action)
|
|
screenlist_action = RENDER_HOLD;
|
|
if ((fy) > fhgt - 1) {
|
|
// Release hold after it has been displayed
|
|
if (!screenlist_action || screenlist_action == RENDER_HOLD)
|
|
screenlist_action = 0;
|
|
}
|
|
|
|
fy %= fhgt;
|
|
if (fy > fhgt - hgt)
|
|
fy = fhgt - hgt;
|
|
} else if (fscroll == 'h') { // TODO: Frames don't scroll horizontally yet!
|
|
|
|
}
|
|
//debug("draw_screen: %8x, %i\n", s, timer);
|
|
|
|
if (!list)
|
|
return -1;
|
|
|
|
//debug("draw_frame: %8x, %i\n", frame, timer);
|
|
|
|
|
|
|
|
LL_Rewind (list);
|
|
do {
|
|
w = (widget *) LL_Get (list);
|
|
if (!w)
|
|
return -1;
|
|
|
|
// TODO: Make this cleaner and more flexible!
|
|
switch (w->type) {
|
|
case WID_STRING:
|
|
if ((w->x > 0) && (w->y > 0) && (w->text)) {
|
|
if ((w->y <= hgt + fy) && (w->y > fy)) {
|
|
strncpy (str, w->text, wid - w->x + 1);
|
|
str[wid - w->x + 1] = 0;
|
|
lcd.string (w->x + left, w->y + top - fy, str);
|
|
}
|
|
}
|
|
break;
|
|
case WID_HBAR:
|
|
if (reset) {
|
|
lcd.init_hbar ();
|
|
reset = 0;
|
|
}
|
|
if ((w->x > 0) && (w->y > 0)) {
|
|
if ((w->y <= hgt + fy) && (w->y > fy)) {
|
|
if (w->length > 0) {
|
|
if ((w->length / lcd.cellwid) < wid - w->x + 1)
|
|
lcd.hbar (w->x + left, w->y + top - fy, w->length);
|
|
else
|
|
lcd.hbar (w->x + left, w->y + top - fy, wid * lcd.cellwid);
|
|
} else if (w->length < 0) {
|
|
// TODO: Rearrange stuff to get left-extending
|
|
// hbars to draw correctly...
|
|
// .. er, this'll require driver modifications,
|
|
// so I'll leave it out for now.
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case WID_VBAR: // FIXME: Vbars don't work in frames!
|
|
if (reset) {
|
|
lcd.init_vbar ();
|
|
reset = 0;
|
|
}
|
|
if ((w->x > 0) && (w->y > 0)) {
|
|
if (w->length > 0) {
|
|
lcd.vbar (w->x, w->length);
|
|
} else if (w->length < 0) {
|
|
// TODO: Rearrange stuff to get down-extending
|
|
// vbars to draw correctly...
|
|
// .. er, this'll require driver modifications,
|
|
// so I'll leave it out for now.
|
|
}
|
|
}
|
|
break;
|
|
case WID_ICON: // FIXME: Not implemented
|
|
break;
|
|
case WID_TITLE: // FIXME: Doesn't work quite right in frames...
|
|
if (!w->text)
|
|
break;
|
|
if (wid < 8)
|
|
break;
|
|
|
|
memset (str, 255, wid);
|
|
str[2] = ' ';
|
|
length = strlen (w->text);
|
|
if (length <= wid - 6) {
|
|
memcpy (str + 3, w->text, length);
|
|
str[length + 3] = ' ';
|
|
} else // Scroll the title, if it doesn't fit...
|
|
{
|
|
speed = 1;
|
|
x = timer / speed;
|
|
y = x / length;
|
|
|
|
// Make sure the whole title gets displayed, at least...
|
|
if (!screenlist_action)
|
|
screenlist_action = RENDER_HOLD;
|
|
if (x > length - 6) {
|
|
// Release hold after it has been displayed
|
|
if (!screenlist_action || screenlist_action == RENDER_HOLD)
|
|
screenlist_action = 0;
|
|
}
|
|
x %= (length);
|
|
x -= 3;
|
|
if (x < 0)
|
|
x = 0;
|
|
if (x > length - (wid - 6))
|
|
x = length - (wid - 6);
|
|
|
|
if (y & 1) // Scrolling backwards...
|
|
{
|
|
x = (length - (wid - 6)) - x;
|
|
}
|
|
strncpy (str + 3, w->text + x, (wid - 6));
|
|
str[wid - 3] = ' ';
|
|
}
|
|
str[wid] = 0;
|
|
|
|
lcd.string (1 + left, 1 + top, str);
|
|
break;
|
|
case WID_SCROLLER: // FIXME: doesn't work in frames...
|
|
{
|
|
int offset;
|
|
int screen_width;
|
|
if (!w->text)
|
|
break;
|
|
if (w->right < w->left)
|
|
break;
|
|
//printf("rendering: %s %d\n",w->text,timer);
|
|
screen_width = w->right - w->left + 1;
|
|
switch (w->length) { // actually, direction...
|
|
// FIXED: Horz scrollers don't show the
|
|
// last letter in the string... (1-off error?)
|
|
case 'h':
|
|
length = strlen (w->text) + 1;
|
|
if (length <= screen_width) {
|
|
/* it fits within the box, just render it */
|
|
lcd.string (w->left, w->top, w->text);
|
|
} else {
|
|
int effLength = length - screen_width;
|
|
int necessaryTimeUnits = 0;
|
|
if (!screenlist_action)
|
|
screenlist_action = RENDER_HOLD;
|
|
if (w->speed > 0) {
|
|
necessaryTimeUnits = effLength * w->speed;
|
|
if (((timer / (effLength * w->speed)) % 2) == 0) {
|
|
//wiggle one way
|
|
offset = (timer % (effLength * w->speed))
|
|
/ w->speed;
|
|
} else {
|
|
//wiggle the other
|
|
offset = (((timer % (effLength * w->speed))
|
|
- (effLength * w->speed) + 1)
|
|
/ w->speed) * -1;
|
|
}
|
|
} else if (w->speed < 0) {
|
|
necessaryTimeUnits = effLength / (w->speed * -1);
|
|
if (((timer / (effLength / (w->speed * -1))) % 2) == 0) {
|
|
offset = (timer % (effLength / (w->speed * -1)))
|
|
* w->speed * -1;
|
|
} else {
|
|
offset = (((timer % (effLength / (w->speed * -1)))
|
|
* w->speed * -1) - effLength + 1) * -1;
|
|
}
|
|
} else {
|
|
offset = 0;
|
|
if (screenlist_action == RENDER_HOLD)
|
|
screenlist_action = 0;
|
|
}
|
|
if (timer > necessaryTimeUnits) {
|
|
if (screenlist_action == RENDER_HOLD)
|
|
screenlist_action = 0;
|
|
}
|
|
if (offset <= length) {
|
|
strncpy (str, &((w->text)[offset]), screen_width);
|
|
str[screen_width] = '\0';
|
|
//printf("%s : %d\n",str,length-offset);
|
|
} else {
|
|
str[0] = '\0';
|
|
}
|
|
lcd.string (w->left, w->top, str);
|
|
}
|
|
break;
|
|
// FIXME: Vert scrollers don't always seem to scroll
|
|
// back up after hitting the bottom. They jump back to
|
|
// the top instead... (nevermind?)
|
|
case 'v':
|
|
{
|
|
int i = 0;
|
|
length = strlen (w->text);
|
|
if (length <= screen_width) {
|
|
/* no scrolling required... */
|
|
lcd.string (w->left, w->top, w->text);
|
|
} else {
|
|
int lines_required = (length / screen_width)
|
|
+ (length % screen_width ? 1 : 0);
|
|
int available_lines = (w->bottom - w->top + 1);
|
|
if (lines_required <= available_lines) {
|
|
// easy...
|
|
for (i = 0; i < lines_required; i++) {
|
|
strncpy (str, &((w->text)[i * screen_width]), screen_width);
|
|
str[screen_width] = '\0';
|
|
lcd.string (w->left, w->top + i, str);
|
|
}
|
|
} else {
|
|
int necessaryTimeUnits = 0;
|
|
int effLines = lines_required - available_lines + 1;
|
|
int begin = 0;
|
|
if (!screenlist_action)
|
|
screenlist_action = RENDER_HOLD;
|
|
//printf("length: %d sw: %d lines req: %d avail lines: %d effLines: %d \n",length,screen_width,lines_required,available_lines,effLines);
|
|
if (w->speed > 0) {
|
|
necessaryTimeUnits = effLines * w->speed;
|
|
if (((timer / (effLines * w->speed)) % 2) == 0) {
|
|
//printf("up ");
|
|
begin = (timer % (effLines * w->speed))
|
|
/ w->speed;
|
|
} else {
|
|
//printf("down ");
|
|
begin = (((timer % (effLines * w->speed))
|
|
- (effLines * w->speed) + 1) / w->speed)
|
|
* -1;
|
|
}
|
|
} else if (w->speed < 0) {
|
|
necessaryTimeUnits = effLines / (w->speed * -1);
|
|
if (((timer / (effLines / (w->speed * -1))) % 2) == 0) {
|
|
begin = (timer % (effLines / (w->speed * -1)))
|
|
* w->speed * -1;
|
|
} else {
|
|
begin = (((timer % (effLines / (w->speed * -1)))
|
|
* w->speed * -1) - effLines + 1)
|
|
* -1;
|
|
}
|
|
} else {
|
|
begin = 0;
|
|
}
|
|
//printf("rendering begin: %d timer: %d effLines: %d\n",begin,timer,effLines);
|
|
for (i = begin; i < begin + available_lines; i++) {
|
|
strncpy (str, &((w->text)[i * (screen_width)]), screen_width);
|
|
str[screen_width] = '\0';
|
|
//printf("rendering: '%s' of %s\n",
|
|
//str,w->text);
|
|
lcd.string (w->left, w->top + (i - begin), str);
|
|
}
|
|
if (timer > necessaryTimeUnits) {
|
|
if (screenlist_action == RENDER_HOLD)
|
|
screenlist_action = 0;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case WID_FRAME:
|
|
{
|
|
// FIXME: doesn't handle nested frames quite right!
|
|
// doesn't handle scrolling in nested frames at all...
|
|
int new_left, new_top, new_right, new_bottom;
|
|
new_left = left + w->left - 1;
|
|
new_top = top + w->top - 1;
|
|
new_right = left + w->right;
|
|
new_bottom = top + w->bottom;
|
|
if (new_right > right)
|
|
new_right = right;
|
|
if (new_bottom > bottom)
|
|
new_bottom = bottom;
|
|
if (new_left >= right || new_top >= bottom) { // Do nothing if it's invisible...
|
|
} else {
|
|
draw_frame (w->kids, w->length, new_left, new_top, new_right, new_bottom, w->wid, w->hgt, w->speed, timer);
|
|
}
|
|
}
|
|
break;
|
|
case WID_NUM: // FIXME: doesn't work in frames...
|
|
if ((w->x > 0) && (w->y >= 0) && (w->y <= 9)) {
|
|
if (reset) {
|
|
lcd.init_num ();
|
|
reset = 0;
|
|
}
|
|
lcd.num (w->x + left, w->y);
|
|
}
|
|
break;
|
|
case WID_NONE:
|
|
default:
|
|
break;
|
|
}
|
|
} while (LL_Next (list) == 0);
|
|
|
|
|
|
return 0;
|
|
}
|