* AT-SPI - Assistive Technology Service Provider Interface
* (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
*
- * Copyright 2001 Sun Microsystems Inc.
+ * Copyright 2001, 2002 Sun Microsystems Inc.,
+ * Copyright 2001, 2002 Ximian, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* Boston, MA 02111-1307, USA.
*/
+#include <stdio.h>
+#include <strings.h>
#include <stdlib.h>
#include "../cspi/spi-private.h"
*
* Issues:
*
- * * bounds now fail to include window border decoration
- * (which we can't really know about yet).
+ * * there are bugs in the compositing code.
*
* * brute-force algorithm uses no client-side cache; performance mediocre.
*
* the active window is not always on top (i.e. autoraise is
* not enabled).
*
- * * text-bearing objects that don't implement AccessibleText (such as buttons)
- * don't get their text clipped since we don't know the character
- * bounding boxes.
- *
* * can't know about "inaccessible" objects that may be obscuring the
* accessible windows (inherent to API-based approach).
*
- * * this implementation doesn't worry about text column-alignment, it generates
- * review lines of more-or-less arbitrary length. The x-coordinate
- * info is preserved in the reviewBuffers list structures, but the
- * "buffer-to-string" algorithm (currently) ignores it.
+ * * text column alignment is crude since it relies on a hard-coded
+ * (and arbitrary) ratio of horizontal pixels to character columns.
+ * For small proportional fonts, overruns are likely to result in
+ * occasional review lines that exceed the standard length.
*
* * (others).
*/
BoundaryRect end_char_bounds;
} TextChunk;
-typedef struct _ScreenReviewBuffer { /* TODO: implement */
+typedef struct _ScreenReviewBuffer {
GList *text_chunks;
} ScreenReviewBuffer;
BoundaryRect **bounds_clone;
bounds_clone = (BoundaryRect **)
g_new0 (gpointer, SPI_LAYER_LAST_DEFINED);
- for (i = 0; i < SPI_LAYER_LAST_DEFINED; ++i) {
+ for (i = 1; i < SPI_LAYER_LAST_DEFINED; ++i) {
bounds_clone[i] = g_new0 (BoundaryRect, 1);
*bounds_clone[i] = *bounds[i];
}
{
GList *target, *iter = next, *prev;
prev = iter->prev;
-// if (chunk->string && strlen (chunk->string)) {
+/* if (chunk->string && strlen (chunk->string)) { */
text_chunk_list =
g_list_insert_before (text_chunk_list, next, chunk);
-// }
+/* }*/
while (iter && CHUNK_BOUNDS_SPANS_END (chunk, (TextChunk *)iter->data)) {
#ifdef CLIP_DEBUG
fprintf (stderr, "deleting %s\n",
text_chunk->text_bounds.height = y2 - text_chunk->text_bounds.y;
text_chunk->start_offset = start;
text_chunk->end_offset = end;
- fprintf (stderr, "text at offset %d, %s, %d, %d\n",
- offset, s, start, end);
AccessibleText_unref (text);
} else {
if (role == SPI_ROLE_PUSH_BUTTON ||
/*
* Note: this routine shouldn't have to do as much as it currently does,
- * but at the moment it works around a pango?/gail? bug which
- * causes WORD boundary type queries to return incorrect strings.
+ * but at the moment it works around another bug (probably one in this
+ * code).
*/
static char *
string_strip_newlines (char *s, long offset, long *start_offset, long *end_offset)
&b.x, &b.y,
&b.width, &b.height,
SPI_COORD_TYPE_SCREEN);
- /* TODO: finish this! */
start_offset = len * (chunk->text_bounds.x - b.x) / b.width;
end_offset = len * (chunk->text_bounds.x +
chunk->text_bounds.width - b.x) / b.width;
do {
s = AccessibleText_getTextAtOffset (text,
start,
- SPI_TEXT_BOUNDARY_WORD_START,
+ SPI_TEXT_BOUNDARY_WORD_END,
&word_start,
&word_end);
range_end = word_end;
return string;
}
+
+static char*
+text_chunk_pad_string (TextChunk *chunk, char *string, glong offset, const char *pad_chars)
+{
+ char *s = "";
+ char *cp;
+ char startbuf[6], padbuf[6], endbuf[6];
+ int pixels_per_column = 6;
+ /* this is an arbitrary pixel-to-textcolumn mapping at present */
+ glong end_padding;
+ gint howmany;
+ howmany = g_unichar_to_utf8 (g_utf8_get_char (pad_chars), startbuf);
+ startbuf[howmany] = '\0';
+ g_assert (howmany < 7 && howmany > 0);
+ cp = g_utf8_find_next_char (pad_chars, NULL);
+ howmany = g_unichar_to_utf8 (g_utf8_get_char (cp), padbuf);
+ padbuf[howmany] = '\0';
+ g_assert (howmany < 7 && howmany > 0);
+ cp = g_utf8_find_next_char (cp, NULL);
+ howmany = g_unichar_to_utf8 (g_utf8_get_char (cp), endbuf);
+ endbuf[howmany] = '\0';
+ g_assert (howmany < 7 && howmany > 0);
+ end_padding = chunk->clip_bounds.x / pixels_per_column;
+ while (offset < end_padding - 1) {
+ s = g_strconcat (s, padbuf, NULL); /* could be more efficient */
+ ++offset;
+ }
+ s = g_strconcat (s, startbuf, string, NULL);
+ offset += g_utf8_strlen (string, -1) + 1;
+ end_padding = chunk->text_bounds.x / pixels_per_column;
+ while (offset < end_padding) {
+ s = g_strconcat (s, padbuf, NULL); /* could be more efficient */
+ ++offset;
+ }
+ end_padding = (chunk->clip_bounds.x + chunk->clip_bounds.width) /
+ pixels_per_column;
+ while (offset < end_padding - 1) {
+ s = g_strconcat (s, padbuf, NULL); /* could be more efficient */
+ ++offset;
+ }
+ s = g_strconcat (s, endbuf, NULL);
+ return s;
+}
+
+static char*
+text_chunk_to_string (TextChunk *chunk, glong offset)
+{
+ char *s = NULL;
+ if (chunk->string) {
+ s = text_chunk_get_clipped_string (chunk);
+ if (chunk->clip_bounds.role == SPI_ROLE_PUSH_BUTTON) {
+ s = text_chunk_pad_string (chunk, s, offset, "[ ]");
+ } else if (chunk->clip_bounds.role == SPI_ROLE_FRAME) {
+ s = text_chunk_pad_string (chunk, s, offset, "| |");
+ } else if (chunk->clip_bounds.role == SPI_ROLE_TEXT) {
+ s = text_chunk_pad_string (chunk, s, offset, "\" \"");
+ } else {
+ s = text_chunk_pad_string (chunk, s, offset, " ");
+ }
+ }
+ return s;
+}
+
static char*
text_chunk_list_to_string (GList *iter)
{
char *s = "";
char *string;
TextChunk *chunk = NULL;
+ int offset = 0;
while (iter) {
chunk = (TextChunk *)iter->data;
- if (chunk /* && chunk->string */) {
- string = text_chunk_get_clipped_string (chunk);
+ if (chunk) {
+ string = text_chunk_to_string (chunk, g_utf8_strlen (s, -1));
if (string)
- s = g_strconcat (s, "|", string, NULL);
- else /* XXX test */
- s = g_strconcat (s, ":", NULL);
+ s = g_strconcat (s, string, NULL);
}
iter = iter->next;
}
return s;
}
+#define COMPOSITE_DEBUG
+
+static void
+toplevel_composite (ScreenReviewBuffer *buffers[])
+{
+ int i;
+ GList *chunk_list, *iter;
+ TextChunk *chunk;
+
+ chunk_list = buffers[SPI_LAYER_CANVAS]->text_chunks;
+ for (i = SPI_LAYER_MDI; i < SPI_LAYER_OVERLAY; ++i) {
+ iter = buffers[i]->text_chunks;
+#ifdef COMPOSITE_DEBUG
+ fprintf (stderr, "layer %d has %d chunks\n",
+ i, g_list_length (iter));
+#endif
+ while (iter) {
+ chunk = (TextChunk *) iter->data;
+ if (chunk) {
+#ifdef COMPOSITE_DEBUG
+ fprintf (stderr, "inserting chunk <%s>\n",
+ chunk->string ? chunk->string : "<null>");
+#endif
+ chunk_list =
+ text_chunk_list_insert_chunk (chunk_list,
+ chunk);
+ }
+ iter = iter->next;
+ }
+ }
+}
+
static char*
review_buffer_composite (ScreenReviewBuffer *buffers[])
{
+ /* TODO: FIXME: something is wrong here, compositing fails */
int i;
GList *chunk_list, *iter;
TextChunk *chunk;
-#ifdef NEED_TO_FIX_THIS
- chunk_list = buffers[0]->text_chunks;
- for (i = 1; i < SPI_LAYER_LAST_DEFINED; ++i) {
+ chunk_list = buffers[SPI_LAYER_BACKGROUND]->text_chunks;
+ for (i = 2; i < SPI_LAYER_LAST_DEFINED; ++i) {
+ if (i == SPI_LAYER_WIDGET) i = SPI_LAYER_OVERLAY;
+ /*
+ * Q: why skip these layers ?
+ * A: since layers WIDGET, MDI, and POPUP have already been
+ * composited into layer CANVAS for each toplevel before this
+ * routine is called.
+ */
iter = buffers[i]->text_chunks;
#ifdef CLIP_DEBUG
fprintf (stderr, "layer %d has %d chunks\n",
iter = iter->next;
}
}
-#endif
+
chunk_list = buffers[SPI_LAYER_WIDGET]->text_chunks;
return text_chunk_list_to_string (chunk_list);
}
GTimer *timer = g_timer_new ();
int i;
- for (i = 0; i < SPI_LAYER_LAST_DEFINED; ++i) {
+ for (i = 1; i < SPI_LAYER_LAST_DEFINED; ++i) {
reviewBuffers[i] = g_new0 (ScreenReviewBuffer, 1);
clip_bounds[i] = g_new0 (BoundaryRect, 1);
clip_bounds[i]->isClipped = FALSE;
&toplevel_bounds.height,
SPI_COORD_TYPE_SCREEN);
toplevel_bounds.isEmpty = FALSE;
- for (i = 0; i < SPI_LAYER_LAST_DEFINED; ++i) {
+ for (i = 1; i < SPI_LAYER_LAST_DEFINED; ++i) {
*clip_bounds[i] = toplevel_bounds;
}
clip_into_buffers (toplevel, clip_bounds,
reviewBuffers, x, y);
+
+ toplevel_composite (reviewBuffers);
#ifdef CHUNK_LIST_DEBUG
fprintf (stderr, "toplevel clip done\n");
debug_chunk_list (reviewBuffers[SPI_LAYER_WIDGET]->text_chunks);
projects / platform / core / uifw / at-spi2-atk.git / blobdiff