#include <stdio.h>
#include <math.h>
#include <libgnomecanvas/libgnomecanvas.h>
+#include <cairo.h>
#include <string.h>
#include <limits.h>
#include "canvas-waveview.h"
#include "rgb_macros.h"
+
extern void c_stacktrace();
enum {
PROP_Y,
PROP_HEIGHT,
PROP_WAVE_COLOR,
+ PROP_CLIP_COLOR,
+ PROP_ZERO_COLOR,
+ PROP_FILL_COLOR,
+ PROP_FILLED,
PROP_RECTIFIED,
+ PROP_ZERO_LINE,
PROP_REGION_START,
PROP_LOGSCALED,
};
static void gnome_canvas_waveview_set_channel (GnomeCanvasWaveView *,
guint32);
-static gint32 gnome_canvas_waveview_ensure_cache (GnomeCanvasWaveView *waveview,
+static guint32 gnome_canvas_waveview_ensure_cache (GnomeCanvasWaveView *waveview,
gulong start_sample,
gulong end_sample);
0, G_MAXUINT, 0,
(G_PARAM_READABLE | G_PARAM_WRITABLE)));
+ g_object_class_install_property
+ (gobject_class,
+ PROP_CLIP_COLOR,
+ g_param_spec_uint ("clip_color", NULL, NULL,
+ 0, G_MAXUINT, 0,
+ (G_PARAM_READABLE | G_PARAM_WRITABLE)));
+
+ g_object_class_install_property
+ (gobject_class,
+ PROP_ZERO_COLOR,
+ g_param_spec_uint ("zero_color", NULL, NULL,
+ 0, G_MAXUINT, 0,
+ (G_PARAM_READABLE | G_PARAM_WRITABLE)));
+
+ g_object_class_install_property
+ (gobject_class,
+ PROP_FILL_COLOR,
+ g_param_spec_uint ("fill_color", NULL, NULL,
+ 0, G_MAXUINT, 0,
+ (G_PARAM_READABLE | G_PARAM_WRITABLE)));
+
+ g_object_class_install_property
+ (gobject_class,
+ PROP_FILLED,
+ g_param_spec_boolean ("filled", NULL, NULL,
+ FALSE,
+ (G_PARAM_READABLE | G_PARAM_WRITABLE)));
+
g_object_class_install_property
(gobject_class,
PROP_RECTIFIED,
FALSE,
(G_PARAM_READABLE | G_PARAM_WRITABLE)));
+ g_object_class_install_property
+ (gobject_class,
+ PROP_ZERO_LINE,
+ g_param_spec_boolean ("zero_line", NULL, NULL,
+ FALSE,
+ (G_PARAM_READABLE | G_PARAM_WRITABLE)));
+
g_object_class_install_property
(gobject_class,
PROP_LOGSCALED,
waveview->gain_src = NULL;
waveview->rectified = FALSE;
waveview->logscaled = FALSE;
+ waveview->filled = TRUE;
+ waveview->zero_line = FALSE;
waveview->region_start = 0;
waveview->samples_per_unit = 1.0;
waveview->amplitude_above_axis = 1.0;
waveview->screen_width = gdk_screen_width ();
waveview->reload_cache_in_render = FALSE;
- waveview->wave_color = RGBA_TO_UINT(44,35,126,255);
+ waveview->wave_color = 0;
+ waveview->clip_color = 0;
+ waveview->zero_color = 0;
+ waveview->fill_color = 0;
}
static void
#define DEBUG_CACHE 0
#undef CACHE_MEMMOVE_OPTIMIZATION
-static gint32
+/** @return cache index of start_sample within the cache */
+static guint32
gnome_canvas_waveview_ensure_cache (GnomeCanvasWaveView *waveview, gulong start_sample, gulong end_sample)
{
gulong required_cache_entries;
/* Note the assumption that we have a 1:1 units:pixel ratio for the canvas. Its everywhere ... */
half_width = (gulong) floor ((waveview->screen_width * waveview->samples_per_unit)/2.0 + 0.5);
-
+
if (start_sample < half_width) {
new_cache_start = 0;
} else {
out:
#if DEBUG_CACHE
fprintf (stderr, "return cache index = %d\n",
- (gint32) floor ((((double) (start_sample - cache->start)) / waveview->samples_per_unit) + 0.5));
+ (guint32) floor ((((double) (start_sample - cache->start)) / waveview->samples_per_unit) + 0.5));
#endif
- return (gint32) floor ((((double) (start_sample - cache->start)) / waveview->samples_per_unit) + 0.5);
+ return (guint32) floor ((((double) (start_sample - cache->start)) / waveview->samples_per_unit) + 0.5);
}
GParamSpec *pspec)
{
+ (void) pspec;
+
GnomeCanvasItem *item;
GnomeCanvasWaveView *waveview;
int redraw = FALSE;
waveview->length_function = g_value_get_pointer(value);
redraw = TRUE;
break;
+
case PROP_SOURCEFILE_LENGTH_FUNCTION:
waveview->sourcefile_length_function = g_value_get_pointer(value);
redraw = TRUE;
}
break;
+ case PROP_CLIP_COLOR:
+ if (waveview->clip_color != g_value_get_uint(value)) {
+ waveview->clip_color = g_value_get_uint(value);
+ redraw = TRUE;
+ }
+ break;
+
+ case PROP_ZERO_COLOR:
+ if (waveview->zero_color != g_value_get_uint(value)) {
+ waveview->zero_color = g_value_get_uint(value);
+ redraw = TRUE;
+ }
+ break;
+
+ case PROP_FILL_COLOR:
+ if (waveview->fill_color != g_value_get_uint(value)) {
+ waveview->fill_color = g_value_get_uint(value);
+ redraw = TRUE;
+ }
+ break;
+
+ case PROP_FILLED:
+ if (waveview->filled != g_value_get_boolean(value)) {
+ waveview->filled = g_value_get_boolean(value);
+ redraw = TRUE;
+ }
+ break;
+
case PROP_RECTIFIED:
if (waveview->rectified != g_value_get_boolean(value)) {
waveview->rectified = g_value_get_boolean(value);
redraw = TRUE;
}
break;
+
+ case PROP_ZERO_LINE:
+ if (waveview->zero_line != g_value_get_boolean(value)) {
+ waveview->zero_line = g_value_get_boolean(value);
+ redraw = TRUE;
+ }
+ break;
+
case PROP_LOGSCALED:
if (waveview->logscaled != g_value_get_boolean(value)) {
waveview->logscaled = g_value_get_boolean(value);
}
static void
-gnome_canvas_waveview_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec)
+gnome_canvas_waveview_get_property (
+ GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
{
g_return_if_fail (object != NULL);
- g_return_if_fail (GNOME_IS_CANVAS_WAVEVIEW (object));
+ g_return_if_fail (GNOME_IS_CANVAS_WAVEVIEW (object));
GnomeCanvasWaveView *waveview = GNOME_CANVAS_WAVEVIEW (object);
switch (prop_id) {
case PROP_DATA_SRC:
- g_value_set_pointer(value, waveview->data_src);
+ g_value_set_pointer(value, waveview->data_src);
break;
case PROP_CHANNEL:
- g_value_set_uint(value, waveview->channel);
+ g_value_set_uint(value, waveview->channel);
break;
case PROP_LENGTH_FUNCTION:
- g_value_set_pointer(value, waveview->length_function);
+ g_value_set_pointer(value, waveview->length_function);
break;
case PROP_SOURCEFILE_LENGTH_FUNCTION:
- g_value_set_pointer(value, waveview->sourcefile_length_function);
+ g_value_set_pointer(value, waveview->sourcefile_length_function);
break;
case PROP_PEAK_FUNCTION:
- g_value_set_pointer(value, waveview->peak_function);
+ g_value_set_pointer(value, waveview->peak_function);
break;
case PROP_GAIN_FUNCTION:
- g_value_set_pointer(value, waveview->gain_curve_function);
+ g_value_set_pointer(value, waveview->gain_curve_function);
break;
case PROP_GAIN_SRC:
- g_value_set_pointer(value, waveview->gain_src);
+ g_value_set_pointer(value, waveview->gain_src);
break;
case PROP_CACHE:
- g_value_set_pointer(value, waveview->cache);
+ g_value_set_pointer(value, waveview->cache);
break;
case PROP_CACHE_UPDATER:
- g_value_set_boolean(value, waveview->cache_updater);
+ g_value_set_boolean(value, waveview->cache_updater);
break;
case PROP_SAMPLES_PER_UNIT:
- g_value_set_double(value, waveview->samples_per_unit);
+ g_value_set_double(value, waveview->samples_per_unit);
break;
case PROP_AMPLITUDE_ABOVE_AXIS:
- g_value_set_double(value, waveview->amplitude_above_axis);
+ g_value_set_double(value, waveview->amplitude_above_axis);
break;
case PROP_X:
g_value_set_uint (value, waveview->wave_color);
break;
+ case PROP_CLIP_COLOR:
+ g_value_set_uint (value, waveview->clip_color);
+ break;
+
+ case PROP_ZERO_COLOR:
+ g_value_set_uint (value, waveview->zero_color);
+ break;
+
+ case PROP_FILL_COLOR:
+ g_value_set_uint (value, waveview->fill_color);
+ break;
+
+ case PROP_FILLED:
+ g_value_set_boolean (value, waveview->filled);
+ break;
+
case PROP_RECTIFIED:
g_value_set_boolean (value, waveview->rectified);
break;
+ case PROP_ZERO_LINE:
+ g_value_set_boolean (value, waveview->zero_line);
+ break;
+
case PROP_LOGSCALED:
g_value_set_boolean (value, waveview->logscaled);
break;
UINT_TO_RGBA (waveview->wave_color, &waveview->wave_r, &waveview->wave_g, &waveview->wave_b,
&waveview->wave_a);
+ UINT_TO_RGBA (waveview->clip_color, &waveview->clip_r, &waveview->clip_g, &waveview->clip_b,
+ &waveview->clip_a);
+ UINT_TO_RGBA (waveview->fill_color, &waveview->fill_r, &waveview->fill_g, &waveview->fill_b,
+ &waveview->fill_a);
// check_cache (waveview, "end of update");
-}
+}
static void
gnome_canvas_waveview_render (GnomeCanvasItem *item,
gulong s1, s2;
int clip_length = 0;
int pymin, pymax;
- int cache_index;
+ guint cache_index;
double half_height;
- int x, end, begin;
+ int x;
+ char rectify;
waveview = GNOME_CANVAS_WAVEVIEW (item);
buf->is_bg = FALSE;
}
- begin = MAX(waveview->bbox_ulx,buf->rect.x0);
+ /* a "unit" means a pixel */
- if (waveview->bbox_lrx >= 0) {
- end = MIN(waveview->bbox_lrx,buf->rect.x1);
- } else {
- end = buf->rect.x1;
- }
+ /* begin: render start x (units) */
+ int const begin = MAX (waveview->bbox_ulx, buf->rect.x0);
+
+ /* zbegin: start x for zero line (units) */
+ int const zbegin = (begin == waveview->bbox_ulx) ? (begin + 1) : begin;
+
+ /* end: render end x (units) */
+ int const end = (waveview->bbox_lrx >= 0) ? MIN (waveview->bbox_lrx,buf->rect.x1) : buf->rect.x1;
+
+ /* zend: end x for zero-line (units) */
+ int const zend = (end == waveview->bbox_lrx) ? (end - 1) : end;
if (begin == end) {
return;
}
- s1 = floor ((begin - waveview->bbox_ulx) * waveview->samples_per_unit) ;
+ /* s1: start sample
+ s2: end sample
+ */
+
+ s1 = floor ((begin - waveview->bbox_ulx) * waveview->samples_per_unit);
// fprintf (stderr, "0x%x begins at sample %f\n", waveview, waveview->bbox_ulx * waveview->samples_per_unit);
waveview->reload_cache_in_render = FALSE;
}
- cache_index = gnome_canvas_waveview_ensure_cache (waveview, s1, s2);
-
// check_cache (waveview, "post-ensure");
+ /* don't rectify at single-sample zoom */
+ if (waveview->rectified && waveview->samples_per_unit > 1) {
+ rectify = TRUE;
+ }
+ else {
+ rectify = FALSE;
+ }
+
+ clip_length = MIN(5,(waveview->height/4));
+
/*
Now draw each line, clipping it appropriately. The clipping
is done by the macros PAINT_FOO().
half_height = waveview->half_height;
/* this makes it slightly easier to comprehend whats going on */
-
#define origin half_height
- for (x = begin; x < end; x++) {
-
+ if (waveview->filled && !rectify) {
+ int prev_pymin = 1;
+ int prev_pymax = 0;
+ int last_pymin = 1;
+ int last_pymax = 0;
+ int next_pymin, next_pymax;
double max, min;
- int clip_max, clip_min;
-
- clip_max = 0;
- clip_min = 0;
+ int next_clip_max = 0;
+ int next_clip_min = 0;
+ if (s1 < waveview->samples_per_unit) {
+ /* we haven't got a prev vars to compare with, so outline the whole line here */
+ prev_pymax = (int) rint ((item->y1 + origin) * item->canvas->pixels_per_unit);
+ prev_pymin = prev_pymax;
+ }
+ else {
+ s1 -= waveview->samples_per_unit;
+ }
+
+ if(end == waveview->bbox_lrx) {
+ /* we don't have the NEXT vars for the last sample */
+ last_pymax = (int) rint ((item->y1 + origin) * item->canvas->pixels_per_unit);
+ last_pymin = last_pymax;
+ }
+ else {
+ s2 += waveview->samples_per_unit;
+ }
+
+ cache_index = gnome_canvas_waveview_ensure_cache (waveview, s1, s2);
+
+ /*
+ * Compute the variables outside the rendering rect
+ */
+ if(prev_pymax != prev_pymin) {
+
+ prev_pymax = (int) rint ((item->y1 + origin - MIN(waveview->cache->data[cache_index].max, 1.0) * half_height) * item->canvas->pixels_per_unit);
+ prev_pymin = (int) rint ((item->y1 + origin - MAX(waveview->cache->data[cache_index].min, -1.0) * half_height) * item->canvas->pixels_per_unit);
+ ++cache_index;
+ }
+ if(last_pymax != last_pymin) {
+ /* take the index of one sample right of what we render */
+ guint index = cache_index + (end - begin);
+
+ if (index >= waveview->cache->data_size) {
+
+ /* the data we want is off the end of the cache, which must mean its beyond
+ the end of the region's source; hence the peak values are 0 */
+ last_pymax = (int) rint ((item->y1 + origin) * item->canvas->pixels_per_unit);
+ last_pymin = (int) rint ((item->y1 + origin) * item->canvas->pixels_per_unit);
+
+ } else {
+
+ last_pymax = (int) rint ((item->y1 + origin - MIN(waveview->cache->data[index].max, 1.0) * half_height) * item->canvas->pixels_per_unit);
+ last_pymin = (int) rint ((item->y1 + origin - MAX(waveview->cache->data[index].min, -1.0) * half_height) * item->canvas->pixels_per_unit);
+
+ }
+
+ }
+
+ /*
+ * initialize NEXT* variables for the first run, duplicated in the loop for speed
+ */
max = waveview->cache->data[cache_index].max;
min = waveview->cache->data[cache_index].min;
if (max >= 1.0) {
max = 1.0;
- clip_max = 1;
+ next_clip_max = 1;
}
-
+
if (min <= -1.0) {
min = -1.0;
- clip_min = 1;
+ next_clip_min = 1;
}
+
+ max *= half_height;
+ min *= half_height;
+
+ next_pymax = (int) rint ((item->y1 + origin - max) * item->canvas->pixels_per_unit);
+ next_pymin = (int) rint ((item->y1 + origin - min) * item->canvas->pixels_per_unit);
+
+ /*
+ * And now the loop
+ */
+ for(x = begin; x < end; ++x) {
+ int clip_max = next_clip_max;
+ int clip_min = next_clip_min;
+ int fill_max, fill_min;
+
+ pymax = next_pymax;
+ pymin = next_pymin;
+
+ /* compute next */
+ if(x == end - 1) {
+ /*next is now the last column, which is outside the rendering rect, and possibly outside the region*/
+ next_pymax = last_pymax;
+ next_pymin = last_pymin;
+ }
+ else {
+ ++cache_index;
+
+ if (cache_index < waveview->cache->data_size) {
+ max = waveview->cache->data[cache_index].max;
+ min = waveview->cache->data[cache_index].min;
+ } else {
+ max = min = 0;
+ }
+
+ next_clip_max = 0;
+ next_clip_min = 0;
+
+ if (max >= 1.0) {
+ max = 1.0;
+ next_clip_max = 1;
+ }
+
+ if (min <= -1.0) {
+ min = -1.0;
+ next_clip_min = 1;
+ }
+
+ max *= half_height;
+ min *= half_height;
+
+ next_pymax = (int) rint ((item->y1 + origin - max) * item->canvas->pixels_per_unit);
+ next_pymin = (int) rint ((item->y1 + origin - min) * item->canvas->pixels_per_unit);
+ }
+
+ /* render */
+ if (pymax == pymin) {
+ PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymin);
+ } else {
+ if((prev_pymax < pymax && next_pymax < pymax) ||
+ (prev_pymax == pymax && next_pymax == pymax)) {
+ fill_max = pymax + 1;
+ PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymax);
+ }
+ else {
+ fill_max = MAX(prev_pymax, next_pymax);
+ if(pymax == fill_max) {
+ PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymax);
+ ++fill_max;
+ }
+ else {
+ PAINT_VERTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymax, fill_max);
+ }
+ }
+
+ if((prev_pymin > pymin && next_pymin > pymin) ||
+ (prev_pymin == pymin && next_pymin == pymin)) {
+ fill_min = pymin - 1;
+ PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymin-1);
+ }
+ else {
+ fill_min = MIN(prev_pymin, next_pymin);
+ if(pymin == fill_min) {
+ PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymin);
+ }
+ else {
+ PAINT_VERTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, fill_min, pymin);
+ }
+ }
+
+ if(fill_max < fill_min) {
+ PAINT_VERTA(buf, waveview->fill_r, waveview->fill_g, waveview->fill_b, waveview->fill_a, x, fill_max, fill_min);
+ }
+ else if(fill_max == fill_min) {
+ PAINT_DOTA(buf, waveview->fill_r, waveview->fill_g, waveview->fill_b, waveview->fill_a, x, fill_max);
+ }
+ }
- /* don't rectify at single-sample zoom */
+ if (clip_max) {
+ PAINT_VERTA(buf, waveview->clip_r, waveview->clip_g, waveview->clip_b, waveview->clip_a, x, pymax, pymax+clip_length);
+ }
+
+ if (clip_min) {
+ PAINT_VERTA(buf, waveview->clip_r, waveview->clip_g, waveview->clip_b, waveview->clip_a, x, pymin-clip_length, pymin);
+ }
- if (waveview->rectified && waveview->samples_per_unit > 1) {
+ prev_pymax = pymax;
+ prev_pymin = pymin;
+ }
- if (fabs (min) > fabs (max)) {
- max = fabs (min);
- }
+ } else if (waveview->filled && rectify) {
- max = max * waveview->height;
+ int prev_pymax = -1;
+ int last_pymax = -1;
+ int next_pymax;
+ double max, min;
+ int next_clip_max = 0;
+ int next_clip_min = 0;
- pymax = (int) rint ((item->y1 + waveview->height - max) * item->canvas->pixels_per_unit);
- pymin = (int) rint ((item->y1 + waveview->height) * item->canvas->pixels_per_unit);
+ // for rectified, this stays constant throughout the loop
+ pymin = (int) rint ((item->y1 + waveview->height) * item->canvas->pixels_per_unit);
- } else {
-
- max = max * half_height;
- min = min * half_height;
-
- pymax = (int) rint ((item->y1 + origin - max) * item->canvas->pixels_per_unit);
- pymin = (int) rint ((item->y1 + origin - min) * item->canvas->pixels_per_unit);
+ if(s1 < waveview->samples_per_unit) {
+ /* we haven't got a prev vars to compare with, so outline the whole line here */
+ prev_pymax = pymin;
+ }
+ else {
+ s1 -= waveview->samples_per_unit;
}
- /* OK, now fill the RGB buffer at x=i with a line between pymin and pymax,
- or, if samples_per_unit == 1, then a dot at each location.
- */
+ if(end == waveview->bbox_lrx) {
+ /* we don't have the NEXT vars for the last sample */
+ last_pymax = pymin;
+ }
+ else {
+ s2 += waveview->samples_per_unit;
+ }
- if (pymax == pymin) {
- PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymin);
- } else {
- PAINT_VERTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymax, pymin);
+ cache_index = gnome_canvas_waveview_ensure_cache (waveview, s1, s2);
+
+ /*
+ * Compute the variables outside the rendering rect
+ */
+ if(prev_pymax < 0) {
+ max = MIN(waveview->cache->data[cache_index].max, 1.0);
+ min = MAX(waveview->cache->data[cache_index].min, -1.0);
+
+ if (fabs (min) > fabs (max)) {
+ max = fabs (min);
+ }
+
+ prev_pymax = (int) rint ((item->y1 + waveview->height - max * waveview->height) * item->canvas->pixels_per_unit);
+ ++cache_index;
}
-
- /* show clipped waveforms with small red lines */
+ if(last_pymax < 0) {
+ /* take the index of one sample right of what we render */
+ int index = cache_index + (end - begin);
+
+ max = MIN(waveview->cache->data[index].max, 1.0);
+ min = MAX(waveview->cache->data[index].min, -1.0);
- if (clip_max || clip_min) {
- clip_length = MIN(5,(waveview->height/4));
+ if (fabs (min) > fabs (max)) {
+ max = fabs (min);
+ }
+
+ last_pymax = (int) rint ((item->y1 + waveview->height - max * waveview->height) * item->canvas->pixels_per_unit);
}
- if (clip_max) {
- PAINT_VERT(buf, 255, 0, 0, x, pymax, pymax+clip_length);
+ /*
+ * initialize NEXT* variables for the first run, duplicated in the loop for speed
+ */
+ max = waveview->cache->data[cache_index].max;
+ min = waveview->cache->data[cache_index].min;
+
+ if (max >= 1.0) {
+ max = 1.0;
+ next_clip_max = 1;
+ }
+
+ if (min <= -1.0) {
+ min = -1.0;
+ next_clip_min = 1;
}
+
+ if (fabs (min) > fabs (max)) {
+ max = fabs (min);
+ }
+
+ next_pymax = (int) rint ((item->y1 + waveview->height - max * waveview->height) * item->canvas->pixels_per_unit);
+
+ /*
+ * And now the loop
+ */
+ for(x = begin; x < end; ++x) {
+ int clip_max = next_clip_max;
+ int clip_min = next_clip_min;
+ int fill_max;
+
+ pymax = next_pymax;
+
+ /* compute next */
+ if(x == end - 1) {
+ /*next is now the last column, which is outside the rendering rect, and possibly outside the region*/
+ next_pymax = last_pymax;
+ }
+ else {
+ ++cache_index;
- if (clip_min) {
- PAINT_VERT(buf, 255, 0, 0, x, pymin-clip_length, pymin);
+ max = waveview->cache->data[cache_index].max;
+ min = waveview->cache->data[cache_index].min;
+
+ if (max >= 1.0) {
+ max = 1.0;
+ next_clip_max = 1;
+ }
+
+ if (min <= -1.0) {
+ min = -1.0;
+ next_clip_min = 1;
+ }
+
+ if (fabs (min) > fabs (max)) {
+ max = fabs (min);
+ }
+
+ next_pymax = (int) rint ((item->y1 + waveview->height - max * waveview->height) * item->canvas->pixels_per_unit);
+ }
+
+ /* render */
+ if (pymax == pymin) {
+ PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymin);
+ } else {
+ if((prev_pymax < pymax && next_pymax < pymax) ||
+ (prev_pymax == pymax && next_pymax == pymax)) {
+ fill_max = pymax + 1;
+ PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymax);
+ }
+ else {
+ fill_max = MAX(prev_pymax, next_pymax);
+ if(pymax == fill_max) {
+ PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymax);
+ ++fill_max;
+ }
+ else {
+ PAINT_VERTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymax, fill_max);
+ }
+ }
+
+ if(fill_max < pymin) {
+ PAINT_VERTA(buf, waveview->fill_r, waveview->fill_g, waveview->fill_b, waveview->fill_a, x, fill_max, pymin);
+ }
+ else if(fill_max == pymin) {
+ PAINT_DOTA(buf, waveview->fill_r, waveview->fill_g, waveview->fill_b, waveview->fill_a, x, pymin);
+ }
+ }
+
+ if (clip_max) {
+ PAINT_VERTA(buf, waveview->clip_r, waveview->clip_g, waveview->clip_b, waveview->clip_a, x, pymax, pymax+clip_length);
+ }
+
+ if (clip_min) {
+ PAINT_VERTA(buf, waveview->clip_r, waveview->clip_g, waveview->clip_b, waveview->clip_a, x, pymin-clip_length, pymin);
+ }
+
+ prev_pymax = pymax;
}
+ }
+ else {
+ cache_index = gnome_canvas_waveview_ensure_cache (waveview, s1, s2);
+
+ for (x = begin; x < end; x++) {
+
+ double max, min;
+ int clip_max, clip_min;
+
+ clip_max = 0;
+ clip_min = 0;
+
+ max = waveview->cache->data[cache_index].max;
+ min = waveview->cache->data[cache_index].min;
+
+ if (max >= 1.0) {
+ max = 1.0;
+ clip_max = 1;
+ }
+
+ if (min <= -1.0) {
+ min = -1.0;
+ clip_min = 1;
+ }
+
+ if (rectify) {
+
+ if (fabs (min) > fabs (max)) {
+ max = fabs (min);
+ }
+
+ max = max * waveview->height;
+
+ pymax = (int) rint ((item->y1 + waveview->height - max) * item->canvas->pixels_per_unit);
+ pymin = (int) rint ((item->y1 + waveview->height) * item->canvas->pixels_per_unit);
+
+ } else {
+
+ max = max * half_height;
+ min = min * half_height;
+
+ pymax = (int) rint ((item->y1 + origin - max) * item->canvas->pixels_per_unit);
+ pymin = (int) rint ((item->y1 + origin - min) * item->canvas->pixels_per_unit);
+ }
+
+ /* OK, now fill the RGB buffer at x=i with a line between pymin and pymax,
+ or, if samples_per_unit == 1, then a dot at each location.
+ */
+
+ if (pymax == pymin) {
+ PAINT_DOTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymin);
+ } else {
+ PAINT_VERTA(buf, waveview->wave_r, waveview->wave_g, waveview->wave_b, waveview->wave_a, x, pymax, pymin);
+ }
+
+ /* show clipped waveforms with small red lines */
+
+ if (clip_max) {
+ PAINT_VERTA(buf, waveview->clip_r, waveview->clip_g, waveview->clip_b, waveview->clip_a, x, pymax, pymax+clip_length);
+ }
+
+ if (clip_min) {
+ PAINT_VERTA(buf, waveview->clip_r, waveview->clip_g, waveview->clip_b, waveview->clip_a, x, pymin-clip_length, pymin);
+ }
- /* presto, we're done */
+ /* presto, we're done */
- cache_index++;
+ cache_index++;
+ }
}
+ if (!waveview->rectified && waveview->zero_line) {
+ // Paint zeroline.
+ //PAINT_HORIZA(buf, waveview->zero_r, waveview->zero_g, waveview->zero_b, waveview->zero_a, begin, endi-1, origin );
+
+ unsigned char zero_r, zero_g, zero_b, zero_a;
+ UINT_TO_RGBA( waveview->zero_color, &zero_r, &zero_g, &zero_b, &zero_a );
+ int zeroline_y = (int) rint ((item->y1 + origin) * item->canvas->pixels_per_unit);
+ PAINT_HORIZA(buf, zero_r, zero_g, zero_b, zero_a, zbegin, zend, zeroline_y);
+ }
#undef origin
}
static void
gnome_canvas_waveview_draw (GnomeCanvasItem *item,
- GdkDrawable *drawable,
- int x, int y,
- int width, int height)
+ GdkDrawable *drawable,
+ int x, int y,
+ int width, int height)
{
GnomeCanvasWaveView *waveview;
+ cairo_t* cr;
+ gulong s1, s2;
+ int cache_index;
+ gboolean rectify;
+ double origin;
+ double clip_length;
+ double xoff;
+ double yoff = 0.0;
+ double ulx;
+ double uly;
+ double lrx;
+ double lry;
waveview = GNOME_CANVAS_WAVEVIEW (item);
- if (parent_class->draw) {
- (* parent_class->draw) (item, drawable, x, y, width, height);
+ /* compute intersection of Drawable area and waveview,
+ in canvas coordinate space
+ */
+
+ if (x > waveview->bbox_ulx) {
+ ulx = x;
+ } else {
+ ulx = waveview->bbox_ulx;
+ }
+
+ if (y > waveview->bbox_uly) {
+ uly = y;
+ } else {
+ uly = waveview->bbox_uly;
+ }
+
+ if (x + width > waveview->bbox_lrx) {
+ lrx = waveview->bbox_lrx;
+ } else {
+ lrx = x + width;
+ }
+
+ if (y + height > waveview->bbox_lry) {
+ lry = waveview->bbox_lry;
+ } else {
+ lry = y + height;
+ }
+
+ /* figure out which samples we need for the resulting intersection */
+
+ s1 = floor ((ulx - waveview->bbox_ulx) * waveview->samples_per_unit) ;
+
+ if (lrx == waveview->bbox_lrx) {
+ /* This avoids minor rounding errors when we have the
+ entire region visible.
+ */
+ s2 = waveview->samples;
+ } else {
+ s2 = s1 + floor ((lrx - ulx) * waveview->samples_per_unit);
+ }
+
+ /* translate back to buffer coordinate space */
+
+ ulx -= x;
+ uly -= y;
+ lrx -= x;
+ lry -= y;
+
+ /* don't rectify at single-sample zoom */
+ if(waveview->rectified && waveview->samples_per_unit > 1.0) {
+ rectify = TRUE;
+ } else {
+ rectify = FALSE;
+ }
+
+ clip_length = MIN(5,(waveview->height/4));
+
+ cr = gdk_cairo_create (drawable);
+ cairo_set_line_width (cr, 0.5);
+
+ origin = waveview->bbox_uly - y + waveview->half_height;
+
+ cairo_rectangle (cr, ulx, uly, lrx - ulx, lry - uly);
+ cairo_clip (cr);
+
+ if (waveview->cache_updater && waveview->reload_cache_in_render) {
+ waveview->cache->start = 0;
+ waveview->cache->end = 0;
+ waveview->reload_cache_in_render = FALSE;
+ }
+
+ cache_index = gnome_canvas_waveview_ensure_cache (waveview, s1, s2);
+
+#if 0
+ printf ("%p r (%d,%d)(%d,%d)[%d x %d] bbox (%d,%d)(%d,%d)[%d x %d]"
+ " draw (%.1f,%.1f)(%.1f,%.1f)[%.1f x %.1f] s= %lu..%lu\n",
+ waveview,
+ x, y,
+ x + width,
+ y + height,
+ width,
+ height,
+ waveview->bbox_ulx,
+ waveview->bbox_uly,
+ waveview->bbox_lrx,
+ waveview->bbox_lry,
+ waveview->bbox_lrx - waveview->bbox_ulx,
+ waveview->bbox_lry - waveview->bbox_uly,
+ ulx, uly,
+ lrx, lry,
+ lrx - ulx,
+ lry - uly,
+ s1, s2);
+#endif
+
+ /* draw the top half */
+
+ for (xoff = ulx; xoff < lrx; xoff++) {
+ double max, min;
+
+ max = waveview->cache->data[cache_index].max;
+ min = waveview->cache->data[cache_index].min;
+
+ if (min <= -1.0) {
+ min = -1.0;
+ }
+
+ if (max >= 1.0) {
+ max = 1.0;
+ }
+
+ if (rectify) {
+ if (fabs (min) > fabs (max)) {
+ max = fabs (min);
+ }
+ }
+
+ yoff = origin - (waveview->half_height * max) + 0.5;
+
+ if (xoff == ulx) {
+ /* first point */
+ cairo_move_to (cr, xoff+0.5, yoff);
+ } else {
+ cairo_line_to (cr, xoff+0.5, yoff);
+ }
+
+ cache_index++;
}
- fprintf (stderr, "please don't use the CanvasWaveView item in a non-aa Canvas\n");
- abort ();
+ /* from the final top point, move out of the clip zone */
+
+ cairo_line_to (cr, xoff + 10, yoff);
+
+ /* now draw the bottom half */
+
+ for (--xoff, --cache_index; xoff >= ulx; --xoff) {
+ double min;
+
+ min = waveview->cache->data[cache_index].min;
+
+ if (min <= -1.0) {
+ min = -1.0;
+ }
+
+ yoff = origin - (waveview->half_height * min) + 0.5;
+
+ cairo_line_to (cr, xoff+0.5, yoff);
+ cache_index--;
+ }
+
+ /* from the final lower point, move out of the clip zone */
+
+ cairo_line_to (cr, xoff - 10, yoff);
+
+ /* close path to fill */
+
+ cairo_close_path (cr);
+
+ /* fill and stroke */
+
+ cairo_set_source_rgba (cr,
+ (waveview->fill_r/255.0),
+ (waveview->fill_g/255.0),
+ (waveview->fill_b/255.0),
+ (waveview->fill_a/255.0));
+ cairo_fill_preserve (cr);
+ cairo_set_source_rgba (cr,
+ (waveview->wave_r/255.0),
+ (waveview->wave_g/255.0),
+ (waveview->wave_b/255.0),
+ (waveview->wave_a/255.0));
+ cairo_stroke (cr);
+
+ cairo_destroy (cr);
}
+#if 0
+ if (clip_max || clip_min) {
+ cairo_set_source_rgba (cr, waveview->clip_r, waveview->clip_g, waveview->clip_b, waveview->clip_a);
+ }
+
+ if (clip_max) {
+ cairo_move_to (cr, xoff, yoff1);
+ cairo_line_to (cr, xoff, yoff1 + clip_length);
+ cairo_stroke (cr);
+ }
+
+ if (clip_min) {
+ cairo_move_to (cr, xoff, yoff2);
+ cairo_line_to (cr, xoff, yoff2 - clip_length);
+ cairo_stroke (cr);
+ }
+
+#endif
+
static void
gnome_canvas_waveview_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2)
{
static double
gnome_canvas_waveview_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item)
{
+ (void) item;
+ (void) x;
+ (void) y;
+ (void) cx;
+ (void) cy;
+ (void) actual_item;
+
/* XXX for now, point is never inside the wave
GnomeCanvasWaveView *waveview;
double x1, y1, x2, y2;
projects / ardour.git / blobdiff