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-rw-r--r--examples/renderdemo.c676
1 files changed, 0 insertions, 676 deletions
diff --git a/examples/renderdemo.c b/examples/renderdemo.c
deleted file mode 100644
index ab89b8fe..00000000
--- a/examples/renderdemo.c
+++ /dev/null
@@ -1,676 +0,0 @@
-/* renderdemo.c: Common code for rendering demos
- *
- * Copyright (C) 1999, 2004 Red Hat Software
- * Copyright (C) 2001 Sun Microsystems
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-#include <config.h>
-#include <errno.h>
-#include <math.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#include <glib.h>
-#include <glib/gprintf.h>
-#include <pango/pango.h>
-
-#include "renderdemo.h"
-
-#define DEFAULT_FONT_FAMILY "Sans"
-#define DEFAULT_FONT_SIZE 18
-
-#define _MAKE_FONT_NAME(family, size) family " " #size
-#define MAKE_FONT_NAME(family, size) _MAKE_FONT_NAME(family, size)
-
-const char *prog_name;
-
-gboolean opt_display = TRUE;
-int opt_dpi = 96;
-const char *opt_font = MAKE_FONT_NAME (DEFAULT_FONT_FAMILY, DEFAULT_FONT_SIZE);
-gboolean opt_header = FALSE;
-const char *opt_output = NULL;
-int opt_margin = 10;
-int opt_markup = FALSE;
-gboolean opt_rtl = FALSE;
-double opt_rotate = 0;
-gboolean opt_auto_dir = TRUE;
-const char *opt_text = NULL;
-gboolean opt_waterfall = FALSE;
-int opt_width = -1;
-int opt_indent = 0;
-int opt_runs = 1;
-PangoEllipsizeMode opt_ellipsize = PANGO_ELLIPSIZE_NONE;
-PangoGravity opt_gravity = PANGO_GRAVITY_SOUTH;
-PangoGravityHint opt_gravity_hint = PANGO_GRAVITY_HINT_NATURAL;
-HintMode opt_hinting = HINT_DEFAULT;
-PangoWrapMode opt_wrap = PANGO_WRAP_WORD_CHAR;
-gboolean opt_wrap_set = FALSE;
-const char *opt_pangorc = NULL;
-const PangoViewer *opt_viewer = NULL;
-
-/* Text (or markup) to render */
-static char *text;
-
-void
-fail (const char *format, ...)
-{
- const char *msg;
-
- va_list vap;
- va_start (vap, format);
- msg = g_strdup_vprintf (format, vap);
- g_printerr ("%s: %s\n", prog_name, msg);
-
- exit (1);
-}
-
-static PangoFontDescription *
-get_font_description (void)
-{
- PangoFontDescription *font_description = pango_font_description_from_string (opt_font);
-
- if ((pango_font_description_get_set_fields (font_description) & PANGO_FONT_MASK_FAMILY) == 0)
- pango_font_description_set_family (font_description, DEFAULT_FONT_FAMILY);
-
- if ((pango_font_description_get_set_fields (font_description) & PANGO_FONT_MASK_SIZE) == 0)
- pango_font_description_set_size (font_description, DEFAULT_FONT_SIZE * PANGO_SCALE);
-
- return font_description;
-}
-
-static PangoLayout *
-make_layout(PangoContext *context,
- const char *text,
- double size)
-{
- static PangoFontDescription *font_description;
- PangoDirection base_dir;
- PangoLayout *layout;
-
- layout = pango_layout_new (context);
- if (opt_markup)
- pango_layout_set_markup (layout, text, -1);
- else
- pango_layout_set_text (layout, text, -1);
-
- pango_layout_set_auto_dir (layout, opt_auto_dir);
- pango_layout_set_ellipsize (layout, opt_ellipsize);
-
- font_description = get_font_description ();
- if (size > 0)
- pango_font_description_set_size (font_description, size * PANGO_SCALE);
-
- if (opt_width > 0)
- {
- pango_layout_set_wrap (layout, opt_wrap);
- pango_layout_set_width (layout, (opt_width * opt_dpi * PANGO_SCALE + 32) / 72);
- }
-
- if (opt_indent != 0)
- pango_layout_set_indent (layout, (opt_indent * opt_dpi * PANGO_SCALE + 32) / 72);
-
- base_dir = pango_context_get_base_dir (context);
- pango_layout_set_alignment (layout,
- base_dir == PANGO_DIRECTION_LTR ? PANGO_ALIGN_LEFT : PANGO_ALIGN_RIGHT);
-
- pango_layout_set_font_description (layout, font_description);
-
- pango_font_description_free (font_description);
-
- return layout;
-}
-
-gchar *
-get_options_string (void)
-{
- PangoFontDescription *font_description = get_font_description ();
- gchar *font_name;
- gchar *result;
-
- if (opt_waterfall)
- pango_font_description_unset_fields (font_description, PANGO_FONT_MASK_SIZE);
-
- font_name = pango_font_description_to_string (font_description);
- result = g_strdup_printf ("%s: %s (%d dpi)", opt_viewer->name, font_name, opt_dpi);
- pango_font_description_free (font_description);
- g_free (font_name);
-
- return result;
-}
-
-static void
-output_body (PangoContext *context,
- const char *text,
- RenderCallback render_cb,
- gpointer cb_context,
- gpointer cb_data,
- int *width,
- int *height,
- gboolean supports_matrix)
-{
- PangoLayout *layout;
- PangoRectangle logical_rect;
- int size, start_size, end_size, increment;
- int x = 0, y = 0;
-
- if (!supports_matrix)
- {
- const PangoMatrix* matrix;
- const PangoMatrix identity = PANGO_MATRIX_INIT;
- matrix = pango_context_get_matrix (context);
- if (matrix)
- {
- x += matrix->x0;
- y += matrix->y0;
- }
- pango_context_set_matrix (context, &identity);
- }
-
- if (opt_waterfall)
- {
- start_size = 8;
- end_size = 48;
- increment = 4;
- }
- else
- {
- start_size = end_size = -1;
- increment = 1;
- }
-
- *width = 0;
- *height = 0;
-
- for (size = start_size; size <= end_size; size += increment)
- {
- layout = make_layout (context, text, size);
- pango_layout_get_extents (layout, NULL, &logical_rect);
-
- if (render_cb)
- (*render_cb) (layout, x, y+*height, cb_context, cb_data);
-
- *width = MAX (*width, PANGO_PIXELS (logical_rect.x + logical_rect.width));
- *width = MAX (*width, PANGO_PIXELS (pango_layout_get_width (layout)));
- *height += PANGO_PIXELS (logical_rect.height);
-
- g_object_unref (layout);
- }
-}
-
-static void
-set_transform (PangoContext *context,
- TransformCallback transform_cb,
- gpointer cb_context,
- gpointer cb_data,
- PangoMatrix *matrix)
-{
- pango_context_set_matrix (context, matrix);
- if (transform_cb)
- (*transform_cb) (context, matrix, cb_context, cb_data);
-}
-
-void
-do_output (PangoContext *context,
- RenderCallback render_cb,
- TransformCallback transform_cb,
- gpointer cb_context,
- gpointer cb_data,
- int *width_out,
- int *height_out)
-{
- PangoLayout *layout;
- PangoRectangle rect;
- PangoMatrix matrix = PANGO_MATRIX_INIT;
- PangoMatrix *orig_matrix;
- gboolean supports_matrix;
- int rotated_width, rotated_height;
- int x = opt_margin;
- int y = opt_margin;
- int width, height;
-
- width = 0;
- height = 0;
-
- orig_matrix = pango_matrix_copy (pango_context_get_matrix (context));
- /* If the backend sets an all-zero matrix on the context,
- * means that it doesn't support transformations.
- */
- supports_matrix = !orig_matrix ||
- (orig_matrix->xx != 0. || orig_matrix->xy != 0. ||
- orig_matrix->yx != 0. || orig_matrix->yy != 0. ||
- orig_matrix->x0 != 0. || orig_matrix->y0 != 0.);
-
- set_transform (context, transform_cb, cb_context, cb_data, NULL);
-
- pango_context_set_language (context, pango_language_get_default ());
- pango_context_set_base_dir (context,
- opt_rtl ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR);
-
- if (opt_header)
- {
- char *options_string = get_options_string ();
- pango_context_set_base_gravity (context, PANGO_GRAVITY_SOUTH);
- layout = make_layout (context, options_string, 10);
- pango_layout_get_extents (layout, NULL, &rect);
-
- width = MAX (width, PANGO_PIXELS (rect.width));
- height += PANGO_PIXELS (rect.height);
-
- if (render_cb)
- (*render_cb) (layout, x, y, cb_context, cb_data);
-
- y += PANGO_PIXELS (rect.height);
-
- g_object_unref (layout);
- g_free (options_string);
- }
-
- if (opt_rotate != 0)
- {
- if (supports_matrix)
- pango_matrix_rotate (&matrix, opt_rotate);
- else
- g_printerr ("The backend does not support rotated text\n");
- }
-
- pango_context_set_base_gravity (context, opt_gravity);
- pango_context_set_gravity_hint (context, opt_gravity_hint);
-
- set_transform (context, transform_cb, cb_context, cb_data, &matrix);
-
- output_body (context,
- text,
- NULL, NULL, NULL,
- &rotated_width, &rotated_height,
- supports_matrix);
-
- rect.x = rect.y = 0;
- rect.width = rotated_width;
- rect.height = rotated_height;
-
- pango_matrix_transform_pixel_rectangle (&matrix, &rect);
-
- matrix.x0 = x - rect.x;
- matrix.y0 = y - rect.y;
-
- set_transform (context, transform_cb, cb_context, cb_data, &matrix);
-
- if (render_cb)
- output_body (context,
- text,
- render_cb, cb_context, cb_data,
- &rotated_width, &rotated_height,
- supports_matrix);
-
- width = MAX (width, rect.width);
- height += rect.height;
-
- width += 2 * opt_margin;
- height += 2 * opt_margin;
-
- if (width_out)
- *width_out = width;
- if (height_out)
- *height_out = height;
-
- pango_context_set_matrix (context, orig_matrix);
- pango_matrix_free (orig_matrix);
-}
-
-static gboolean
-parse_enum (GType type,
- int *value,
- const char *name,
- const char *arg,
- gpointer data,
- GError **error)
-{
- char *possible_values = NULL;
- gboolean ret;
-
- ret = pango_parse_enum (type,
- arg,
- value,
- FALSE,
- &possible_values);
-
- if (!ret && error)
- {
- g_set_error(error,
- G_OPTION_ERROR,
- G_OPTION_ERROR_BAD_VALUE,
- "Argument for %s must be one of %s",
- name,
- possible_values);
- ret = FALSE;
- }
-
- g_free (possible_values);
-
- return ret;
-}
-
-static gboolean
-parse_ellipsis (const char *name,
- const char *arg,
- gpointer data,
- GError **error)
-{
- return parse_enum (PANGO_TYPE_ELLIPSIZE_MODE, &opt_ellipsize,
- name, arg, data, error);
-}
-
-static gboolean
-parse_gravity (const char *name,
- const char *arg,
- gpointer data,
- GError **error)
-{
- return parse_enum (PANGO_TYPE_GRAVITY, &opt_gravity,
- name, arg, data, error);
-}
-
-static gboolean
-parse_gravity_hint (const char *name,
- const char *arg,
- gpointer data,
- GError **error)
-{
- return parse_enum (PANGO_TYPE_GRAVITY_HINT, &opt_gravity_hint,
- name, arg, data, error);
-}
-
-static gboolean
-parse_hinting (const char *name,
- const char *arg,
- gpointer data,
- GError **error)
-{
- gboolean ret = TRUE;
-
- if (strcmp (arg, "none") == 0)
- opt_hinting = HINT_NONE;
- else if (strcmp (arg, "auto") == 0)
- opt_hinting = HINT_AUTO;
- else if (strcmp (arg, "full") == 0)
- opt_hinting = HINT_FULL;
- else
- {
- g_set_error(error,
- G_OPTION_ERROR,
- G_OPTION_ERROR_BAD_VALUE,
- "Argument for --hinting must be one of none/auto/full");
- ret = FALSE;
- }
-
- return ret;
-}
-
-static gboolean
-parse_wrap (const char *name,
- const char *arg,
- gpointer data,
- GError **error)
-{
- gboolean ret;
- if ((ret = parse_enum (PANGO_TYPE_WRAP_MODE, &opt_wrap,
- name, arg, data, error)))
- {
- opt_wrap_set = TRUE;
- }
- return ret;
-}
-
-static gchar *
-backends_to_string (void)
-{
- GString *backends = g_string_new (NULL);
- const PangoViewer **viewer;
-
- for (viewer = viewers; *viewer; viewer++)
- if ((*viewer)->id)
- {
- g_string_append (backends, (*viewer)->id);
- g_string_append_c (backends, '/');
- }
- g_string_truncate (backends, MAX (0, (gint)backends->len - 1));
-
- return g_string_free(backends,FALSE);
-}
-
-static int
-backends_get_count (void)
-{
- const PangoViewer **viewer;
- int i = 0;
-
- for (viewer = viewers; *viewer; viewer++)
- if ((*viewer)->id)
- i++;
-
- return i;
-}
-
-
-static gchar *
-backend_description (void)
-{
- GString *description = g_string_new("Pango backend to use for rendering ");
- int backends_count = backends_get_count ();
-
- if (backends_count > 1)
- g_string_append_printf(description,"(default: %s)", (*viewers)->id);
- else if (backends_count == 1)
- g_string_append_printf(description,"(only available: %s)", (*viewers)->id);
- else
- g_string_append_printf(description,"(no backends found!)");
-
- return g_string_free(description,FALSE);
-
-}
-
-
-static gboolean
-parse_backend (const char *name,
- const char *arg,
- gpointer data,
- GError **error)
-{
- gboolean ret = TRUE;
- const PangoViewer **viewer;
-
- for (viewer = viewers; *viewer; viewer++)
- if (!g_ascii_strcasecmp ((*viewer)->id, arg))
- break;
-
- if (*viewer)
- opt_viewer = *viewer;
- else
- {
- gchar *backends = backends_to_string ();
-
- g_set_error(error,
- G_OPTION_ERROR,
- G_OPTION_ERROR_BAD_VALUE,
- "Available --backend options are: %s",
- backends);
- g_free(backends);
- ret = FALSE;
- }
-
- return ret;
-}
-
-
-static gboolean
-show_version(const char *name,
- const char *arg,
- gpointer data,
- GError **error)
-{
- g_printf("%s (%s) %s\n", prog_name, PACKAGE_NAME, PACKAGE_VERSION);
- g_printf("module interface version: %s\n", MODULE_VERSION);
-
- if (PANGO_VERSION != pango_version())
- g_printf("\nLinked Pango library has a different version: %s\n", pango_version_string ());
-
- exit(0);
-}
-
-void
-parse_options (int argc, char *argv[])
-{
- gchar *backend_options = backends_to_string();
- GOptionFlags backend_flag = backends_get_count () > 1 ? 0 : G_OPTION_FLAG_HIDDEN;
- gchar *backend_desc = backend_description ();
- GOptionEntry entries[] =
- {
- {"no-auto-dir", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &opt_auto_dir,
- "No layout direction according to contents", NULL},
- {"backend", 0, backend_flag, G_OPTION_ARG_CALLBACK, &parse_backend,
- backend_desc, backend_options},
- {"no-display", 'q', G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &opt_display,
- "Do not display (just write to file or whatever)", NULL},
- {"dpi", 0, 0, G_OPTION_ARG_INT, &opt_dpi,
- "Set the resolution", "number"},
- {"ellipsize", 0, 0, G_OPTION_ARG_CALLBACK, &parse_ellipsis,
- "Ellipsization mode", "start/middle/end"},
- {"font", 0, 0, G_OPTION_ARG_STRING, &opt_font,
- "Set the font description", "description"},
- {"gravity", 0, 0, G_OPTION_ARG_CALLBACK, &parse_gravity,
- "Base gravity: glyph rotation", "south/east/north/west/auto"},
- {"gravity-hint", 0, 0, G_OPTION_ARG_CALLBACK, &parse_gravity_hint,
- "Gravity hint", "natural/strong/line"},
- {"header", 0, 0, G_OPTION_ARG_NONE, &opt_header,
- "Display the options in the output", NULL},
- {"hinting", 0, 0, G_OPTION_ARG_CALLBACK, &parse_hinting,
- "Hinting style", "none/auto/full"},
- {"indent", 0, 0, G_OPTION_ARG_INT, &opt_indent,
- "Width in points to indent paragraphs", "points"},
- {"margin", 0, 0, G_OPTION_ARG_INT, &opt_margin,
- "Set the margin on the output in pixels", "pixels"},
- {"markup", 0, 0, G_OPTION_ARG_NONE, &opt_markup,
- "Interpret text as Pango markup", NULL},
- {"output", 'o', 0, G_OPTION_ARG_STRING, &opt_output,
- "Save rendered image to output file", "file"},
- {"pangorc", 0, 0, G_OPTION_ARG_STRING, &opt_pangorc,
- "pangorc file to use (default is ./pangorc)", "file"},
- {"rtl", 0, 0, G_OPTION_ARG_NONE, &opt_rtl,
- "Set base direction to right-to-left", NULL},
- {"rotate", 0, 0, G_OPTION_ARG_DOUBLE, &opt_rotate,
- "Angle at which to rotate results", "degrees"},
- {"runs", 'n', 0, G_OPTION_ARG_INT, &opt_runs,
- "Run Pango layout engine this many times", "integer"},
- {"text", 't', 0, G_OPTION_ARG_STRING, &opt_text,
- "Text to display (instead of a file)", "string"},
- {"version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, &show_version,
- "Show version numbers", NULL},
- {"waterfall", 0, 0, G_OPTION_ARG_NONE, &opt_waterfall,
- "Create a waterfall display", NULL},
- {"width", 'w', 0, G_OPTION_ARG_INT, &opt_width,
- "Width in points to which to wrap output", "points"},
- {"wrap", 0, 0, G_OPTION_ARG_CALLBACK, &parse_wrap,
- "Text wrapping mode (needs a width to be set)", "word/char/word-char"},
- {NULL}
- };
- GError *error = NULL;
- GError *parse_error = NULL;
- GOptionContext *context;
- size_t len;
-
- prog_name = g_path_get_basename (argv[0]);
- context = g_option_context_new ("- FILE");
- g_option_context_add_main_entries (context, entries, NULL);
- if (!g_option_context_parse (context, &argc, &argv, &parse_error))
- {
- if (parse_error != NULL)
- fail("%s", parse_error->message);
- else
- fail("Option parse error");
- exit(1);
- }
- g_option_context_free(context);
- g_free(backend_options);
- g_free(backend_desc);
-
- if ((opt_text && argc != 1) || (!opt_text && argc != 2))
- {
- if (opt_text && argc != 1)
- fail ("When specifying --text, no file should be given");
-
- g_printerr ("Usage: %s [OPTION...] FILE\n", prog_name);
- exit (1);
- }
-
- /* set up the backend */
- if (!opt_viewer)
- {
- opt_viewer = *viewers;
- if (!opt_viewer)
- fail ("No viewer backend found");
- }
-
- /* if wrap mode is set then width must be set */
- if (opt_width < 0 && opt_wrap_set)
- {
- g_printerr ("The wrap mode only has effect if a width is set\n");
- }
-
- /* Get the text
- */
- if (opt_text)
- {
- text = g_strdup (opt_text);
- len = strlen (text);
- }
- else
- {
- if (!g_file_get_contents (argv[1], &text, &len, &error))
- fail ("%s\n", error->message);
- }
-
- /* Strip one trailing newline
- */
- if (len > 0 && text[len - 1] == '\n')
- len--;
- if (len > 0 && text[len - 1] == '\r')
- len--;
- text[len] = '\0';
-
- /* Make sure we have valid markup
- */
- if (opt_markup &&
- !pango_parse_markup (text, -1, 0, NULL, NULL, NULL, &error))
- fail ("Cannot parse input as markup: %s", error->message);
-
- /* Setup PANGO_RC_FILE
- */
- if (!opt_pangorc)
- if (g_file_test ("./pangorc", G_FILE_TEST_IS_REGULAR))
- opt_pangorc = "./pangorc";
- if (opt_pangorc)
- g_setenv ("PANGO_RC_FILE", opt_pangorc, TRUE);
-}
-
-
-void
-finalize (void)
-{
- g_free (text);
-}
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