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editor: add support for pre-edit styling

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Add pango dependency to the example and use pango for text handling.

Signed-off-by: Jan Arne Petersen <jpetersen@openismus.com>
Jan Arne Petersen 12 years ago committed by Kristian Høgsberg
parent 49a3fb3d1d
commit 0a1cf393c6
3 changed files with 170 additions and 285 deletions
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  1. 8
      clients/Makefile.am
  2. 436
      clients/editor.c
  3. 3
      configure.ac

8
clients/Makefile.am
Unescape View File

@ -4,6 +4,7 @@ bin_PROGRAMS = \
noinst_PROGRAMS = \ noinst_PROGRAMS = \
$(clients_programs) \ $(clients_programs) \
$(pango_programs) \
$(poppler_programs) \ $(poppler_programs) \
$(simple_clients_programs) \ $(simple_clients_programs) \
$(simple_egl_clients_programs) $(simple_egl_clients_programs)
@ -61,7 +62,6 @@ clients_programs = \
resizor \ resizor \
eventdemo \ eventdemo \
clickdot \ clickdot \
editor \
transformed \ transformed \
calibrator \ calibrator \
$(full_gl_client_programs) $(full_gl_client_programs)
@ -129,11 +129,15 @@ transformed_LDADD = libtoytoolkit.la
calibrator_SOURCES = calibrator.c ../shared/matrix.c ../shared/matrix.h calibrator_SOURCES = calibrator.c ../shared/matrix.c ../shared/matrix.h
calibrator_LDADD = libtoytoolkit.la calibrator_LDADD = libtoytoolkit.la
if HAVE_PANGO
pango_programs = editor
editor_SOURCES = \ editor_SOURCES = \
editor.c \ editor.c \
text-protocol.c \ text-protocol.c \
text-client-protocol.h text-client-protocol.h
editor_LDADD = libtoytoolkit.la editor_LDADD = libtoytoolkit.la $(PANGO_LIBS)
editor_CPPFLAGS = $(AM_CPPFLAGS) $(PANGO_CFLAGS)
endif
keyboard = weston-keyboard keyboard = weston-keyboard
weston_keyboard_SOURCES = \ weston_keyboard_SOURCES = \

436
clients/editor.c
Unescape View File

@ -21,6 +21,8 @@
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/ */
#include "config.h"
#include <assert.h> #include <assert.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@ -29,21 +31,11 @@
#include <linux/input.h> #include <linux/input.h>
#include <cairo.h> #include <cairo.h>
#include <pango/pangocairo.h>
#include "window.h" #include "window.h"
#include "text-client-protocol.h" #include "text-client-protocol.h"
static const char *font_name = "sans-serif";
static int font_size = 14;
struct text_layout {
cairo_glyph_t *glyphs;
int num_glyphs;
cairo_text_cluster_t *clusters;
int num_clusters;
cairo_text_cluster_flags_t cluster_flags;
cairo_scaled_font_t *font;
};
struct text_entry { struct text_entry {
struct widget *widget; struct widget *widget;
struct window *window; struct window *window;
@ -55,12 +47,14 @@ struct text_entry {
char *text; char *text;
int32_t cursor; int32_t cursor;
char *commit; char *commit;
PangoAttrList *attr_list;
} preedit; } preedit;
struct { struct {
PangoAttrList *attr_list;
int32_t cursor; int32_t cursor;
} preedit_info; } preedit_info;
struct text_model *model; struct text_model *model;
struct text_layout *layout; PangoLayout *layout;
struct { struct {
xkb_mod_mask_t shift_mask; xkb_mod_mask_t shift_mask;
} keysym; } keysym;
@ -111,180 +105,6 @@ utf8_next_char(const char *p)
return NULL; return NULL;
} }
static struct text_layout *
text_layout_create(void)
{
struct text_layout *layout;
cairo_surface_t *surface;
cairo_t *cr;
layout = malloc(sizeof *layout);
if (!layout)
return NULL;
layout->glyphs = NULL;
layout->num_glyphs = 0;
layout->clusters = NULL;
layout->num_clusters = 0;
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 0, 0);
cr = cairo_create(surface);
cairo_set_font_size(cr, font_size);
cairo_select_font_face(cr, font_name, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
layout->font = cairo_get_scaled_font(cr);
cairo_scaled_font_reference(layout->font);
cairo_destroy(cr);
cairo_surface_destroy(surface);
return layout;
}
static void
text_layout_destroy(struct text_layout *layout)
{
if (layout->glyphs)
cairo_glyph_free(layout->glyphs);
if (layout->clusters)
cairo_text_cluster_free(layout->clusters);
cairo_scaled_font_destroy(layout->font);
free(layout);
}
static void
text_layout_set_text(struct text_layout *layout,
const char *text)
{
if (layout->glyphs)
cairo_glyph_free(layout->glyphs);
if (layout->clusters)
cairo_text_cluster_free(layout->clusters);
layout->glyphs = NULL;
layout->num_glyphs = 0;
layout->clusters = NULL;
layout->num_clusters = 0;
cairo_scaled_font_text_to_glyphs(layout->font, 0, 0, text, -1,
&layout->glyphs, &layout->num_glyphs,
&layout->clusters, &layout->num_clusters,
&layout->cluster_flags);
}
static void
text_layout_draw(struct text_layout *layout, cairo_t *cr)
{
cairo_save(cr);
cairo_set_scaled_font(cr, layout->font);
cairo_show_glyphs(cr, layout->glyphs, layout->num_glyphs);
cairo_restore(cr);
}
static void
text_layout_extents(struct text_layout *layout, cairo_text_extents_t *extents)
{
cairo_scaled_font_glyph_extents(layout->font,
layout->glyphs, layout->num_glyphs,
extents);
}
static uint32_t
bytes_from_glyphs(struct text_layout *layout, uint32_t index)
{
int i;
uint32_t glyphs = 0, bytes = 0;
for (i = 0; i < layout->num_clusters && glyphs < index; i++) {
bytes += layout->clusters[i].num_bytes;
glyphs += layout->clusters[i].num_glyphs;
}
return bytes;
}
static uint32_t
glyphs_from_bytes(struct text_layout *layout, uint32_t index)
{
int i;
uint32_t glyphs = 0, bytes = 0;
for (i = 0; i < layout->num_clusters && bytes < index; i++) {
bytes += layout->clusters[i].num_bytes;
glyphs += layout->clusters[i].num_glyphs;
}
return glyphs;
}
static int
text_layout_xy_to_index(struct text_layout *layout, double x, double y)
{
cairo_text_extents_t extents;
int i;
double d;
if (layout->num_glyphs == 0)
return 0;
cairo_scaled_font_glyph_extents(layout->font,
layout->glyphs, layout->num_glyphs,
&extents);
if (x < 0)
return 0;
for (i = 0; i < layout->num_glyphs - 1; ++i) {
d = layout->glyphs[i + 1].x - layout->glyphs[i].x;
if (x < layout->glyphs[i].x + d/2)
return bytes_from_glyphs(layout, i);
}
d = extents.width - layout->glyphs[layout->num_glyphs - 1].x;
if (x < layout->glyphs[layout->num_glyphs - 1].x + d/2)
return bytes_from_glyphs(layout, layout->num_glyphs - 1);
return bytes_from_glyphs(layout, layout->num_glyphs);
}
static void
text_layout_index_to_pos(struct text_layout *layout, uint32_t index, cairo_rectangle_t *pos)
{
cairo_text_extents_t extents;
int glyph_index = glyphs_from_bytes(layout, index);
if (!pos)
return;
cairo_scaled_font_glyph_extents(layout->font,
layout->glyphs, layout->num_glyphs,
&extents);
if (glyph_index >= layout->num_glyphs) {
pos->x = extents.x_advance;
pos->y = layout->num_glyphs ? layout->glyphs[layout->num_glyphs - 1].y : 0;
pos->width = 1;
pos->height = extents.height;
return;
}
pos->x = layout->glyphs[glyph_index].x;
pos->y = layout->glyphs[glyph_index].y;
pos->width = glyph_index < layout->num_glyphs - 1 ? layout->glyphs[glyph_index + 1].x : extents.x_advance - pos->x;
pos->height = extents.height;
}
static void
text_layout_get_cursor_pos(struct text_layout *layout, int index, cairo_rectangle_t *pos)
{
text_layout_index_to_pos(layout, index, pos);
pos->width = 1;
}
static void text_entry_redraw_handler(struct widget *widget, void *data); static void text_entry_redraw_handler(struct widget *widget, void *data);
static void text_entry_button_handler(struct widget *widget, static void text_entry_button_handler(struct widget *widget,
struct input *input, uint32_t time, struct input *input, uint32_t time,
@ -332,8 +152,10 @@ text_model_preedit_string(void *data,
text_entry_delete_selected_text(entry); text_entry_delete_selected_text(entry);
text_entry_set_preedit(entry, text, entry->preedit_info.cursor); text_entry_set_preedit(entry, text, entry->preedit_info.cursor);
entry->preedit.commit = strdup(commit); entry->preedit.commit = strdup(commit);
entry->preedit.attr_list = entry->preedit_info.attr_list;
entry->preedit_info.cursor = 0; entry->preedit_info.cursor = 0;
entry->preedit_info.attr_list = NULL;
widget_schedule_redraw(entry->widget); widget_schedule_redraw(entry->widget);
} }
@ -378,6 +200,48 @@ text_model_preedit_styling(void *data,
uint32_t length, uint32_t length,
uint32_t style) uint32_t style)
{ {
struct text_entry *entry = data;
PangoAttribute *attr1 = NULL;
PangoAttribute *attr2 = NULL;
if (!entry->preedit_info.attr_list)
entry->preedit_info.attr_list = pango_attr_list_new();
switch (style) {
case TEXT_MODEL_PREEDIT_STYLE_DEFAULT:
case TEXT_MODEL_PREEDIT_STYLE_UNDERLINE:
attr1 = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
break;
case TEXT_MODEL_PREEDIT_STYLE_INCORRECT:
attr1 = pango_attr_underline_new(PANGO_UNDERLINE_ERROR);
attr2 = pango_attr_underline_color_new(65535, 0, 0);
break;
case TEXT_MODEL_PREEDIT_STYLE_SELECTION:
attr1 = pango_attr_background_new(0.3 * 65535, 0.3 * 65535, 65535);
attr2 = pango_attr_foreground_new(65535, 65535, 65535);
break;
case TEXT_MODEL_PREEDIT_STYLE_HIGHLIGHT:
case TEXT_MODEL_PREEDIT_STYLE_ACTIVE:
attr1 = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
attr2 = pango_attr_weight_new(PANGO_WEIGHT_BOLD);
break;
case TEXT_MODEL_PREEDIT_STYLE_INACTIVE:
attr1 = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
attr2 = pango_attr_foreground_new(0.3 * 65535, 0.3 * 65535, 0.3 * 65535);
break;
}
if (attr1) {
attr1->start_index = entry->cursor + index;
attr1->end_index = entry->cursor + index + length;
pango_attr_list_insert(entry->preedit_info.attr_list, attr1);
}
if (attr2) {
attr2->start_index = entry->cursor + index;
attr2->end_index = entry->cursor + index + length;
pango_attr_list_insert(entry->preedit_info.attr_list, attr2);
}
} }
static void static void
@ -529,9 +393,6 @@ text_entry_create(struct editor *editor, const char *text)
entry->model = text_model_factory_create_text_model(editor->text_model_factory); entry->model = text_model_factory_create_text_model(editor->text_model_factory);
text_model_add_listener(entry->model, &text_model_listener, entry); text_model_add_listener(entry->model, &text_model_listener, entry);
entry->layout = text_layout_create();
text_layout_set_text(entry->layout, entry->text);
widget_set_redraw_handler(entry->widget, text_entry_redraw_handler); widget_set_redraw_handler(entry->widget, text_entry_redraw_handler);
widget_set_button_handler(entry->widget, text_entry_button_handler); widget_set_button_handler(entry->widget, text_entry_button_handler);
@ -543,7 +404,7 @@ text_entry_destroy(struct text_entry *entry)
{ {
widget_destroy(entry->widget); widget_destroy(entry->widget);
text_model_destroy(entry->model); text_model_destroy(entry->model);
text_layout_destroy(entry->layout); g_clear_object(&entry->layout);
free(entry->text); free(entry->text);
free(entry); free(entry);
} }
@ -629,30 +490,63 @@ static void
text_entry_update_layout(struct text_entry *entry) text_entry_update_layout(struct text_entry *entry)
{ {
char *text; char *text;
PangoAttrList *attr_list;
assert(((unsigned int)entry->cursor) <= strlen(entry->text) + assert(((unsigned int)entry->cursor) <= strlen(entry->text) +
(entry->preedit.text ? strlen(entry->preedit.text) : 0)); (entry->preedit.text ? strlen(entry->preedit.text) : 0));
if (!entry->preedit.text) { if (entry->preedit.text) {
text_layout_set_text(entry->layout, entry->text);
return;
}
text = malloc(strlen(entry->text) + strlen(entry->preedit.text) + 1); text = malloc(strlen(entry->text) + strlen(entry->preedit.text) + 1);
strncpy(text, entry->text, entry->cursor); strncpy(text, entry->text, entry->cursor);
strcpy(text + entry->cursor, entry->preedit.text); strcpy(text + entry->cursor, entry->preedit.text);
strcpy(text + entry->cursor + strlen(entry->preedit.text), strcpy(text + entry->cursor + strlen(entry->preedit.text),
entry->text + entry->cursor); entry->text + entry->cursor);
} else {
text = strdup(entry->text);
}
text_layout_set_text(entry->layout, text); if (entry->cursor != entry->anchor) {
free(text); int start_index = MIN(entry->cursor, entry->anchor);
int end_index = MAX(entry->cursor, entry->anchor);
PangoAttribute *attr;
widget_schedule_redraw(entry->widget); attr_list = pango_attr_list_copy(entry->preedit.attr_list);
text_model_set_surrounding_text(entry->model, if (!attr_list)
entry->text, attr_list = pango_attr_list_new();
entry->cursor,
entry->anchor); attr = pango_attr_background_new(0.3 * 65535, 0.3 * 65535, 65535);
attr->start_index = start_index;
attr->end_index = end_index;
pango_attr_list_insert(attr_list, attr);
attr = pango_attr_foreground_new(65535, 65535, 65535);
attr->start_index = start_index;
attr->end_index = end_index;
pango_attr_list_insert(attr_list, attr);
} else {
attr_list = pango_attr_list_ref(entry->preedit.attr_list);
}
if (entry->preedit.text && !entry->preedit.attr_list) {
PangoAttribute *attr;
if (!attr_list)
attr_list = pango_attr_list_new();
attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
attr->start_index = entry->cursor;
attr->end_index = entry->cursor + strlen(entry->preedit.text);
pango_attr_list_insert(attr_list, attr);
}
if (entry->layout) {
pango_layout_set_text(entry->layout, text, -1);
pango_layout_set_attributes(entry->layout, attr_list);
}
free(text);
pango_attr_list_unref(attr_list);
} }
static void static void
@ -671,6 +565,13 @@ text_entry_insert_at_cursor(struct text_entry *entry, const char *text)
entry->anchor += strlen(text); entry->anchor += strlen(text);
text_entry_update_layout(entry); text_entry_update_layout(entry);
widget_schedule_redraw(entry->widget);
text_model_set_surrounding_text(entry->model,
entry->text,
entry->cursor,
entry->anchor);
} }
static void static void
@ -683,6 +584,9 @@ text_entry_reset_preedit(struct text_entry *entry)
free(entry->preedit.commit); free(entry->preedit.commit);
entry->preedit.commit = NULL; entry->preedit.commit = NULL;
pango_attr_list_unref(entry->preedit.attr_list);
entry->preedit.attr_list = NULL;
} }
static void static void
@ -714,15 +618,22 @@ text_entry_set_preedit(struct text_entry *entry,
entry->preedit.cursor = preedit_cursor; entry->preedit.cursor = preedit_cursor;
text_entry_update_layout(entry); text_entry_update_layout(entry);
widget_schedule_redraw(entry->widget);
} }
static void static void
text_entry_set_cursor_position(struct text_entry *entry, text_entry_set_cursor_position(struct text_entry *entry,
int32_t x, int32_t y) int32_t x, int32_t y)
{ {
int index, trailing;
text_entry_commit_and_reset(entry); text_entry_commit_and_reset(entry);
entry->cursor = text_layout_xy_to_index(entry->layout, x, y); pango_layout_xy_to_index(entry->layout,
x * PANGO_SCALE, y * PANGO_SCALE,
&index, &trailing);
entry->cursor = index + trailing;
entry->serial++; entry->serial++;
@ -736,15 +647,32 @@ text_entry_set_cursor_position(struct text_entry *entry,
text_entry_update_layout(entry); text_entry_update_layout(entry);
widget_schedule_redraw(entry->widget); widget_schedule_redraw(entry->widget);
text_model_set_surrounding_text(entry->model,
entry->text,
entry->cursor,
entry->anchor);
} }
static void static void
text_entry_set_anchor_position(struct text_entry *entry, text_entry_set_anchor_position(struct text_entry *entry,
int32_t x, int32_t y) int32_t x, int32_t y)
{ {
entry->anchor = text_layout_xy_to_index(entry->layout, x, y); int index, trailing;
pango_layout_xy_to_index(entry->layout,
x * PANGO_SCALE, y * PANGO_SCALE,
&index, &trailing);
entry->anchor = index + trailing;
text_entry_update_layout(entry);
widget_schedule_redraw(entry->widget); widget_schedule_redraw(entry->widget);
text_model_set_surrounding_text(entry->model,
entry->text,
entry->cursor,
entry->anchor);
} }
static void static void
@ -762,6 +690,11 @@ text_entry_delete_text(struct text_entry *entry,
text_entry_update_layout(entry); text_entry_update_layout(entry);
widget_schedule_redraw(entry->widget); widget_schedule_redraw(entry->widget);
text_model_set_surrounding_text(entry->model,
entry->text,
entry->cursor,
entry->anchor);
} }
static void static void
@ -778,89 +711,26 @@ text_entry_delete_selected_text(struct text_entry *entry)
entry->anchor = entry->cursor; entry->anchor = entry->cursor;
} }
static void
text_entry_draw_selection(struct text_entry *entry, cairo_t *cr)
{
cairo_text_extents_t extents;
uint32_t start_index = entry->anchor < entry->cursor ? entry->anchor : entry->cursor;
uint32_t end_index = entry->anchor < entry->cursor ? entry->cursor : entry->anchor;
cairo_rectangle_t start;
cairo_rectangle_t end;
if (entry->anchor == entry->cursor)
return;
text_layout_extents(entry->layout, &extents);
text_layout_index_to_pos(entry->layout, start_index, &start);
text_layout_index_to_pos(entry->layout, end_index, &end);
cairo_save (cr);
cairo_set_source_rgba(cr, 0.3, 0.3, 1.0, 0.5);
cairo_rectangle(cr,
start.x, extents.y_bearing + extents.height + 2,
end.x - start.x, -extents.height - 4);
cairo_fill(cr);
cairo_rectangle(cr,
start.x, extents.y_bearing + extents.height,
end.x - start.x, -extents.height);
cairo_clip(cr);
cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
text_layout_draw(entry->layout, cr);
cairo_restore (cr);
}
static void static void
text_entry_draw_cursor(struct text_entry *entry, cairo_t *cr) text_entry_draw_cursor(struct text_entry *entry, cairo_t *cr)
{ {
cairo_text_extents_t extents; PangoRectangle extents;
cairo_rectangle_t cursor_pos; PangoRectangle cursor_pos;
if (entry->preedit.text && entry->preedit.cursor < 0) if (entry->preedit.text && entry->preedit.cursor < 0)
return; return;
text_layout_extents(entry->layout, &extents); pango_layout_get_extents(entry->layout, &extents, NULL);
text_layout_get_cursor_pos(entry->layout, pango_layout_get_cursor_pos(entry->layout,
entry->cursor + entry->preedit.cursor, entry->cursor + entry->preedit.cursor,
&cursor_pos); &cursor_pos, NULL);
cairo_set_line_width(cr, 1.0); cairo_set_line_width(cr, 1.0);
cairo_move_to(cr, cursor_pos.x, extents.y_bearing + extents.height + 2); cairo_move_to(cr, PANGO_PIXELS(cursor_pos.x), PANGO_PIXELS(extents.height) + 2);
cairo_line_to(cr, cursor_pos.x, extents.y_bearing - 2); cairo_line_to(cr, PANGO_PIXELS(cursor_pos.x), - 2);
cairo_stroke(cr); cairo_stroke(cr);
} }
static void
text_entry_draw_preedit(struct text_entry *entry, cairo_t *cr)
{
cairo_text_extents_t extents;
cairo_rectangle_t start;
cairo_rectangle_t end;
if (!entry->preedit.text)
return;
text_layout_extents(entry->layout, &extents);
text_layout_index_to_pos(entry->layout, entry->cursor, &start);
text_layout_index_to_pos(entry->layout,
entry->cursor + strlen(entry->preedit.text),
&end);
cairo_save (cr);
cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
cairo_rectangle(cr,
start.x, 0,
end.x - start.x, 1);
cairo_fill(cr);
cairo_restore (cr);
}
static const int text_offset_left = 10; static const int text_offset_left = 10;
static void static void
@ -899,13 +769,17 @@ text_entry_redraw_handler(struct widget *widget, void *data)
cairo_set_source_rgba(cr, 0, 0, 0, 1); cairo_set_source_rgba(cr, 0, 0, 0, 1);
cairo_translate(cr, text_offset_left, allocation.height / 2); cairo_translate(cr, text_offset_left, allocation.height / 2);
text_layout_draw(entry->layout, cr);
text_entry_draw_selection(entry, cr); if (!entry->layout)
entry->layout = pango_cairo_create_layout(cr);
else
pango_cairo_update_layout(cr, entry->layout);
text_entry_draw_cursor(entry, cr); text_entry_update_layout(entry);
text_entry_draw_preedit(entry, cr); pango_cairo_show_layout(cr, entry->layout);
text_entry_draw_cursor(entry, cr);
cairo_pop_group_to_source(cr); cairo_pop_group_to_source(cr);
cairo_paint(cr); cairo_paint(cr);
@ -1095,6 +969,10 @@ main(int argc, char *argv[])
memset(&editor, 0, sizeof editor); memset(&editor, 0, sizeof editor);
#ifdef HAVE_PANGO
g_type_init();
#endif
editor.display = display_create(argc, argv); editor.display = display_create(argc, argv);
if (editor.display == NULL) { if (editor.display == NULL) {
fprintf(stderr, "failed to create display: %m\n"); fprintf(stderr, "failed to create display: %m\n");

3
configure.ac
Unescape View File

@ -218,6 +218,7 @@ if test x$enable_clients = xyes; then
AS_IF([test "x$have_cairo_egl" = "xyes"], AS_IF([test "x$have_cairo_egl" = "xyes"],
[AC_DEFINE([HAVE_CAIRO_EGL], [1], [Have cairo-egl])], [AC_DEFINE([HAVE_CAIRO_EGL], [1], [Have cairo-egl])],
[AC_MSG_WARN([clients will use cairo image, cairo-egl not used because $CAIRO_EGL_PKG_ERRORS])]) [AC_MSG_WARN([clients will use cairo image, cairo-egl not used because $CAIRO_EGL_PKG_ERRORS])])
PKG_CHECK_MODULES(PANGO, [pangocairo], [have_pango=yes], [have_pango=no])
fi fi
AC_ARG_ENABLE(weston-launch, [ --enable-weston-launch],, enable_weston_launch=yes) AC_ARG_ENABLE(weston-launch, [ --enable-weston-launch],, enable_weston_launch=yes)
@ -244,6 +245,8 @@ AM_CONDITIONAL(HAVE_GLU, test "x$have_glu" = "xyes")
AM_CONDITIONAL(HAVE_POPPLER, test "x$have_poppler" = "xyes") AM_CONDITIONAL(HAVE_POPPLER, test "x$have_poppler" = "xyes")
AM_CONDITIONAL(HAVE_PANGO, test "x$have_pango" = "xyes")
AM_CONDITIONAL(BUILD_FULL_GL_CLIENTS, AM_CONDITIONAL(BUILD_FULL_GL_CLIENTS,
test x$cairo_modules = "xcairo-gl" -a "x$have_cairo_egl" = "xyes" -a "x$enable_egl" = "xyes") test x$cairo_modules = "xcairo-gl" -a "x$have_cairo_egl" = "xyes" -a "x$enable_egl" = "xyes")

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