#define FONT_SCALE (72.0/96.0)
+#define HANDLE_OUTLINE_RGBA_ARGS 0.5, 0.5, 0.5, 0.75
+#define HANDLE_OUTLINE_WIDTH_PIXELS 2.0
+
+#define SELECTION_SLOP_PIXELS 4.0
+
/*========================================================*/
/* Private types. */
/*========================================================*/
struct _glLabelTextPrivate {
- GtkTextTagTable *tag_table;
- GtkTextBuffer *buffer;
+
+ GtkTextTagTable *tag_table;
+ GtkTextBuffer *buffer;
gchar *font_family;
gdouble font_size;
PangoWeight font_weight;
gboolean font_italic_flag;
PangoAlignment align;
+ glValignment valign;
glColorNode *color_node;
gdouble line_spacing;
gboolean auto_shrink;
PangoAlignment text_alignment,
gboolean checkpoint);
+static void set_text_valignment (glLabelObject *object,
+ glValignment text_valignment,
+ gboolean checkpoint);
+
static void set_text_line_spacing (glLabelObject *object,
gdouble text_line_spacing,
gboolean checkpoint);
static PangoAlignment get_text_alignment (glLabelObject *object);
+static glValignment get_text_valignment (glLabelObject *object);
+
static gdouble get_text_line_spacing (glLabelObject *object);
static glColorNode* get_text_color (glLabelObject *object);
+static void set_text_path (glLabelText *this,
+ cairo_t *cr,
+ gboolean screen_flag,
+ glMergeRecord *record);
+
static void draw_object (glLabelObject *object,
cairo_t *cr,
gboolean screen_flag,
gdouble size,
PangoWeight weight,
PangoStyle style,
+ gdouble line_spacing,
gchar *text,
- gdouble width);
+ gdouble width,
+ gdouble height);
static gboolean object_at (glLabelObject *object,
cairo_t *cr,
gdouble x_pixels,
gdouble y_pixels);
+static void draw_handles (glLabelObject *object,
+ cairo_t *cr);
+
/*****************************************************************************/
/* Object infrastructure. */
/*****************************************************************************/
-G_DEFINE_TYPE (glLabelText, gl_label_text, GL_TYPE_LABEL_OBJECT);
+G_DEFINE_TYPE (glLabelText, gl_label_text, GL_TYPE_LABEL_OBJECT)
/*****************************************************************************/
label_object_class->set_font_weight = set_font_weight;
label_object_class->set_font_italic_flag = set_font_italic_flag;
label_object_class->set_text_alignment = set_text_alignment;
+ label_object_class->set_text_valignment = set_text_valignment;
label_object_class->set_text_line_spacing = set_text_line_spacing;
label_object_class->set_text_color = set_text_color;
label_object_class->get_font_family = get_font_family;
label_object_class->get_font_weight = get_font_weight;
label_object_class->get_font_italic_flag = get_font_italic_flag;
label_object_class->get_text_alignment = get_text_alignment;
+ label_object_class->get_text_valignment = get_text_valignment;
label_object_class->get_text_line_spacing = get_text_line_spacing;
label_object_class->get_text_color = get_text_color;
label_object_class->draw_object = draw_object;
label_object_class->draw_shadow = draw_shadow;
label_object_class->object_at = object_at;
+ label_object_class->draw_handles = draw_handles;
object_class->finalize = gl_label_text_finalize;
}
ltext->priv->font_weight = gl_label_get_default_font_weight (label);
ltext->priv->font_italic_flag = gl_label_get_default_font_italic_flag (label);
ltext->priv->align = gl_label_get_default_text_alignment (label);
+ ltext->priv->valign = gl_label_get_default_text_valignment (label);
ltext->priv->color_node = color_node;
ltext->priv->line_spacing = gl_label_get_default_text_line_spacing (label);
new_ltext->priv->font_italic_flag = ltext->priv->font_italic_flag;
set_text_color (dst_object, text_color_node, FALSE);
new_ltext->priv->align = ltext->priv->align;
+ new_ltext->priv->valign = ltext->priv->valign;
new_ltext->priv->line_spacing = ltext->priv->line_spacing;
new_ltext->priv->auto_shrink = ltext->priv->auto_shrink;
fontmap = pango_cairo_font_map_new ();
- context = pango_cairo_font_map_create_context (PANGO_CAIRO_FONT_MAP (fontmap));
+ context = pango_font_map_create_context (PANGO_FONT_MAP (fontmap));
options = cairo_font_options_create ();
cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
+ cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_OFF);
pango_cairo_context_set_font_options (context, options);
cairo_font_options_destroy (options);
}
+/*****************************************************************************/
+/* Set vertical text alignment method. */
+/*****************************************************************************/
+static void
+set_text_valignment (glLabelObject *object,
+ glValignment text_valignment,
+ gboolean checkpoint)
+{
+ glLabelText *ltext = (glLabelText *)object;
+ glLabel *label;
+
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (ltext && GL_IS_LABEL_TEXT (ltext));
+
+ if (ltext->priv->valign != text_valignment)
+ {
+ if ( checkpoint )
+ {
+ label = gl_label_object_get_parent (GL_LABEL_OBJECT (ltext));
+ gl_label_checkpoint (label, _("Vertically align text"));
+ }
+
+ ltext->priv->size_changed = TRUE;
+
+ ltext->priv->valign = text_valignment;
+ gl_label_object_emit_changed (GL_LABEL_OBJECT(ltext));
+ }
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+
/*****************************************************************************/
/* Set text line spacing method. */
/*****************************************************************************/
}
+/*****************************************************************************/
+/* Get vertical text alignment method. */
+/*****************************************************************************/
+static glValignment
+get_text_valignment (glLabelObject *object)
+{
+ glLabelText *ltext = (glLabelText *)object;
+
+ gl_debug (DEBUG_LABEL, "");
+
+ g_return_val_if_fail (ltext && GL_IS_LABEL_TEXT (ltext), GTK_JUSTIFY_LEFT);
+
+ return ltext->priv->valign;
+}
+
+
/*****************************************************************************/
/* Get text line spacing method. */
/*****************************************************************************/
/*****************************************************************************/
-/* Draw object method. */
+/* Automatically shrink text size to fit within bounding box. */
/*****************************************************************************/
-static void
-draw_object (glLabelObject *object,
- cairo_t *cr,
- gboolean screen_flag,
- glMergeRecord *record)
+static gdouble
+auto_shrink_font_size (cairo_t *cr,
+ gchar *family,
+ gdouble size,
+ PangoWeight weight,
+ PangoStyle style,
+ gdouble line_spacing,
+ gchar *text,
+ gdouble width,
+ gdouble height)
{
- glColorNode *color_node;
- guint color;
+ PangoLayout *layout;
+ PangoFontDescription *desc;
+ gint iw, ih;
+ gdouble layout_width, layout_height;
+ gdouble new_wsize, new_hsize;
- gl_debug (DEBUG_LABEL, "START");
+ layout = pango_cairo_create_layout (cr);
- color_node = gl_label_object_get_text_color (object);
- color = gl_color_node_expand (color_node, record);
- if (color_node->field_flag && screen_flag)
- {
- color = GL_COLOR_MERGE_DEFAULT;
- }
- gl_color_node_free (&color_node);
-
- draw_text_real (object, cr, screen_flag, record, color);
+ desc = pango_font_description_new ();
+ pango_font_description_set_family (desc, family);
+ pango_font_description_set_weight (desc, weight);
+ pango_font_description_set_style (desc, style);
+ pango_font_description_set_size (desc, size * PANGO_SCALE);
- gl_debug (DEBUG_LABEL, "END");
-}
+ pango_layout_set_font_description (layout, desc);
+ pango_font_description_free (desc);
+ pango_layout_set_spacing (layout, size * (line_spacing-1) * PANGO_SCALE);
+ pango_layout_set_width (layout, -1);
+ pango_layout_set_text (layout, text, -1);
+ pango_layout_get_size (layout, &iw, &ih);
+ layout_width = (gdouble)iw / (gdouble)PANGO_SCALE;
+ layout_height = (gdouble)ih / (gdouble)PANGO_SCALE;
-/*****************************************************************************/
-/* Draw shadow method. */
-/*****************************************************************************/
-static void
-draw_shadow (glLabelObject *object,
- cairo_t *cr,
- gboolean screen_flag,
- glMergeRecord *record)
-{
- glColorNode *color_node;
- guint color;
- glColorNode *shadow_color_node;
- gdouble shadow_opacity;
- guint shadow_color;
+ g_object_unref (layout);
- gl_debug (DEBUG_LABEL, "START");
+ g_print ("Object w = %g, layout w = %g\n", width, layout_width);
+ g_print ("Object h = %g, layout h = %g\n", height, layout_height);
- color_node = gl_label_object_get_text_color (object);
- color = gl_color_node_expand (color_node, record);
- if (color_node->field_flag && screen_flag)
+ new_wsize = new_hsize = size;
+ if ( layout_width > width )
{
- color = GL_COLOR_MERGE_DEFAULT;
+ /* Scale down. */
+ new_wsize = size * (width-2*GL_LABEL_TEXT_MARGIN) / layout_width;
+
+ /* Round down to nearest 1/2 point */
+ new_wsize = (int)(new_wsize*2.0) / 2.0;
+
+ /* don't get ridiculously small. */
+ if (new_wsize < 1.0)
+ {
+ new_wsize = 1.0;
+ }
}
- gl_color_node_free (&color_node);
-
- shadow_color_node = gl_label_object_get_shadow_color (object);
- if (shadow_color_node->field_flag)
- {
- shadow_color_node->color = GL_COLOR_SHADOW_MERGE_DEFAULT;
- }
- shadow_opacity = gl_label_object_get_shadow_opacity (object);
- shadow_color = gl_color_shadow (shadow_color_node->color, shadow_opacity, color);
- gl_color_node_free (&shadow_color_node);
- draw_text_real (object, cr, screen_flag, record, shadow_color);
+ if ( layout_height > height )
+ {
+ /* Scale down. */
+ new_hsize = size * height / layout_height;
- gl_debug (DEBUG_LABEL, "END");
+ /* Round down to nearest 1/2 point */
+ new_hsize = (int)(new_hsize*2.0) / 2.0;
+
+ /* don't get ridiculously small. */
+ if (new_hsize < 1.0)
+ {
+ new_hsize = 1.0;
+ }
+ }
+
+ return (new_wsize < new_hsize ? new_wsize : new_hsize);
}
/*****************************************************************************/
-/* Draw text. */
+/* Update pango layout. */
/*****************************************************************************/
static void
-draw_text_real (glLabelObject *object,
- cairo_t *cr,
- gboolean screen_flag,
- glMergeRecord *record,
- guint color)
+set_text_path (glLabelText *this,
+ cairo_t *cr,
+ gboolean screen_flag,
+ glMergeRecord *record)
{
- gdouble object_w, object_h;
- gdouble raw_w, raw_h;
- gchar *text;
- GList *lines;
- gchar *font_family;
- gdouble font_size;
- PangoWeight font_weight;
- gboolean font_italic_flag;
- gboolean auto_shrink;
- gdouble text_line_spacing;
- PangoAlignment alignment;
- PangoStyle style;
- PangoLayout *layout;
+ gint iw, ih, y;
+ gdouble object_w, object_h;
+ gdouble raw_w, raw_h;
+ gchar *text;
+ GList *lines;
+ gdouble font_size;
+ gboolean auto_shrink;
+ PangoLayout *layout;
+ PangoStyle style;
PangoFontDescription *desc;
- gdouble scale_x, scale_y;
+ gdouble scale_x, scale_y;
cairo_font_options_t *font_options;
PangoContext *context;
- gl_debug (DEBUG_LABEL, "START");
-
- gl_label_object_get_size (object, &object_w, &object_h);
- gl_label_object_get_raw_size (object, &raw_w, &raw_h);
- lines = gl_label_text_get_lines (GL_LABEL_TEXT (object));
- font_family = gl_label_object_get_font_family (object);
- font_size = gl_label_object_get_font_size (object) * FONT_SCALE;
- font_weight = gl_label_object_get_font_weight (object);
- font_italic_flag = gl_label_object_get_font_italic_flag (object);
+ gl_debug (DEBUG_LABEL, "START");
- alignment = gl_label_object_get_text_alignment (object);
- text_line_spacing =
- gl_label_object_get_text_line_spacing (object);
- auto_shrink = gl_label_text_get_auto_shrink (GL_LABEL_TEXT (object));
+ /*
+ * Workaround for pango Bug#700592, which is a regression of Bug#341481.
+ * Render font at device scale and scale font size accordingly.
+ */
+ scale_x = 1.0;
+ scale_y = 1.0;
+ cairo_device_to_user_distance (cr, &scale_x, &scale_y);
+ scale_x = fabs (scale_x);
+ scale_y = fabs (scale_y);
+ cairo_save (cr);
+ cairo_scale (cr, scale_x, scale_y);
- text = gl_text_node_lines_expand (lines, record);
+ gl_label_object_get_size (GL_LABEL_OBJECT (this), &object_w, &object_h);
+ gl_label_object_get_raw_size (GL_LABEL_OBJECT (this), &raw_w, &raw_h);
- style = font_italic_flag ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL;
+ lines = gl_label_text_get_lines (this);
+ text = gl_text_node_lines_expand (lines, record);
+ style = this->priv->font_italic_flag ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL;
+ font_size = this->priv->font_size * FONT_SCALE;
+ auto_shrink = gl_label_text_get_auto_shrink (this);
if (!screen_flag && record && auto_shrink && (raw_w != 0.0))
{
font_size = auto_shrink_font_size (cr,
- font_family,
+ this->priv->font_family,
font_size,
- font_weight,
+ this->priv->font_weight,
style,
+ this->priv->line_spacing,
text,
- object_w);
+ object_w,
+ object_h);
}
- /*
- * Workaround for pango Bug#341481.
- * Render font at device scale and scale font size accordingly.
- */
- scale_x = 1.0;
- scale_y = 1.0;
- cairo_device_to_user_distance (cr, &scale_x, &scale_y);
- scale_x = fabs (scale_x);
- scale_y = fabs (scale_y);
- cairo_save (cr);
- cairo_scale (cr, scale_x, scale_y);
-
layout = pango_cairo_create_layout (cr);
font_options = cairo_font_options_create ();
cairo_font_options_set_hint_style (font_options, CAIRO_HINT_STYLE_NONE);
+ cairo_font_options_set_hint_metrics (font_options, CAIRO_HINT_METRICS_OFF);
context = pango_layout_get_context (layout);
pango_cairo_context_set_font_options (context, font_options);
cairo_font_options_destroy (font_options);
desc = pango_font_description_new ();
- pango_font_description_set_family (desc, font_family);
- pango_font_description_set_weight (desc, font_weight);
- pango_font_description_set_style (desc, style);
+ pango_font_description_set_family (desc, this->priv->font_family);
+ pango_font_description_set_weight (desc, this->priv->font_weight);
pango_font_description_set_size (desc, font_size * PANGO_SCALE / scale_x);
+ pango_font_description_set_style (desc, style);
pango_layout_set_font_description (layout, desc);
pango_font_description_free (desc);
pango_layout_set_text (layout, text, -1);
- pango_layout_set_spacing (layout, font_size * (text_line_spacing-1) * PANGO_SCALE / scale_x);
+ pango_layout_set_spacing (layout, font_size * (this->priv->line_spacing-1) * PANGO_SCALE / scale_x);
if (raw_w == 0.0)
{
pango_layout_set_width (layout, -1);
{
pango_layout_set_width (layout, object_w * PANGO_SCALE / scale_x);
}
- pango_layout_set_wrap (layout, PANGO_WRAP_CHAR);
- pango_layout_set_alignment (layout, alignment);
+ pango_layout_set_wrap (layout, PANGO_WRAP_WORD);
+ pango_layout_set_alignment (layout, this->priv->align);
+ pango_layout_get_pixel_size (layout, &iw, &ih);
+ switch (this->priv->valign)
+ {
+ case GL_VALIGN_VCENTER:
+ y = (object_h/scale_x - ih) / 2;
+ break;
+ case GL_VALIGN_BOTTOM:
+ y = object_h/scale_x - ih;
+ break;
+ default:
+ y = 0;
+ break;
+ }
- cairo_set_source_rgba (cr, GL_COLOR_RGBA_ARGS (color));
- cairo_move_to (cr, GL_LABEL_TEXT_MARGIN/scale_x, 0);
- pango_cairo_show_layout (cr, layout);
-
- cairo_restore (cr);
+ cairo_move_to (cr, GL_LABEL_TEXT_MARGIN/scale_x, y);
+ pango_cairo_layout_path (cr, layout);
g_object_unref (layout);
+ gl_text_node_lines_free (&lines);
+ cairo_restore (cr);
- gl_text_node_lines_free (&lines);
- g_free (font_family);
-
- gl_debug (DEBUG_LABEL, "END");
+ gl_debug (DEBUG_LABEL, "END");
}
/*****************************************************************************/
-/* Automatically shrink text size to fit within horizontal width. */
+/* Draw object method. */
/*****************************************************************************/
-static gdouble
-auto_shrink_font_size (cairo_t *cr,
- gchar *family,
- gdouble size,
- PangoWeight weight,
- PangoStyle style,
- gchar *text,
- gdouble width)
+static void
+draw_object (glLabelObject *object,
+ cairo_t *cr,
+ gboolean screen_flag,
+ glMergeRecord *record)
{
- PangoLayout *layout;
- PangoFontDescription *desc;
- gint iw, ih;
- gdouble layout_width;
- gdouble new_size;
+ glColorNode *color_node;
+ guint color;
- layout = pango_cairo_create_layout (cr);
+ gl_debug (DEBUG_LABEL, "START");
- desc = pango_font_description_new ();
- pango_font_description_set_family (desc, family);
- pango_font_description_set_weight (desc, weight);
- pango_font_description_set_style (desc, style);
- pango_font_description_set_size (desc, size * PANGO_SCALE);
-
- pango_layout_set_font_description (layout, desc);
- pango_font_description_free (desc);
+ color_node = gl_label_object_get_text_color (object);
+ color = gl_color_node_expand (color_node, record);
+ if (color_node->field_flag && screen_flag)
+ {
+ color = GL_COLOR_MERGE_DEFAULT;
+ }
+ gl_color_node_free (&color_node);
- pango_layout_set_text (layout, text, -1);
- pango_layout_set_width (layout, -1);
- pango_layout_get_size (layout, &iw, &ih);
- layout_width = (gdouble)iw / (gdouble)PANGO_SCALE;
+ draw_text_real (object, cr, screen_flag, record, color);
- g_object_unref (layout);
+ gl_debug (DEBUG_LABEL, "END");
+}
- g_print ("Object w = %g, layout w = %g\n", width, layout_width);
- if ( layout_width > width )
- {
- /* Scale down. */
- new_size = size * (width-2*GL_LABEL_TEXT_MARGIN)/layout_width;
+/*****************************************************************************/
+/* Draw shadow method. */
+/*****************************************************************************/
+static void
+draw_shadow (glLabelObject *object,
+ cairo_t *cr,
+ gboolean screen_flag,
+ glMergeRecord *record)
+{
+ glColorNode *color_node;
+ guint color;
+ glColorNode *shadow_color_node;
+ gdouble shadow_opacity;
+ guint shadow_color;
- /* Round down to nearest 1/2 point */
- new_size = (int)(new_size*2.0) / 2.0;
+ gl_debug (DEBUG_LABEL, "START");
- /* don't get ridiculously small. */
- if (new_size < 1.0)
- {
- new_size = 1.0;
- }
+ color_node = gl_label_object_get_text_color (object);
+ color = gl_color_node_expand (color_node, record);
+ if (color_node->field_flag && screen_flag)
+ {
+ color = GL_COLOR_MERGE_DEFAULT;
}
- else
+ gl_color_node_free (&color_node);
+
+ shadow_color_node = gl_label_object_get_shadow_color (object);
+ if (shadow_color_node->field_flag)
{
- new_size = size;
+ shadow_color_node->color = GL_COLOR_SHADOW_MERGE_DEFAULT;
}
+ shadow_opacity = gl_label_object_get_shadow_opacity (object);
+ shadow_color = gl_color_shadow (shadow_color_node->color, shadow_opacity, color);
+ gl_color_node_free (&shadow_color_node);
+
+ draw_text_real (object, cr, screen_flag, record, shadow_color);
+
+ gl_debug (DEBUG_LABEL, "END");
+}
- return new_size;
+
+/*****************************************************************************/
+/* Draw text. */
+/*****************************************************************************/
+static void
+draw_text_real (glLabelObject *object,
+ cairo_t *cr,
+ gboolean screen_flag,
+ glMergeRecord *record,
+ guint color)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ set_text_path (GL_LABEL_TEXT (object), cr, screen_flag, record);
+
+ cairo_set_source_rgba (cr, GL_COLOR_RGBA_ARGS (color));
+ cairo_fill (cr);
+
+ gl_debug (DEBUG_LABEL, "END");
}
gdouble y)
{
gdouble w, h;
+ gdouble scale_x, scale_y;
gl_label_object_get_size (object, &w, &h);
- cairo_rectangle (cr, 0.0, 0.0, w, h);
-
- if (cairo_in_fill (cr, x, y))
+ if ( (x >= 0) && (x <= w) && (y >= 0) && (y <= h) )
{
- return TRUE;
+ cairo_new_path (cr);
+ set_text_path (GL_LABEL_TEXT (object), cr, TRUE, NULL);
+ if (cairo_in_fill (cr, x, y))
+ {
+ return TRUE;
+ }
+
+
+ scale_x = 1.0;
+ scale_y = 1.0;
+ cairo_device_to_user_distance (cr, &scale_x, &scale_y);
+
+ cairo_set_line_width (cr, 2*SELECTION_SLOP_PIXELS*scale_x);
+
+ if (cairo_in_stroke (cr, x, y))
+ {
+ return TRUE;
+ }
+
+
+ if (gl_label_object_is_selected (object))
+ {
+ cairo_new_path (cr);
+ cairo_rectangle (cr, 0, 0, w, h);
+
+ scale_x = 1.0;
+ scale_y = 1.0;
+ cairo_device_to_user_distance (cr, &scale_x, &scale_y);
+
+ cairo_set_line_width (cr, 2*SELECTION_SLOP_PIXELS*scale_x);
+
+ if (cairo_in_stroke (cr, x, y))
+ {
+ return TRUE;
+ }
+ }
+
}
return FALSE;
}
+/*****************************************************************************/
+/* Draw text style handles. */
+/*****************************************************************************/
+static void
+draw_handles (glLabelObject *object,
+ cairo_t *cr)
+{
+ gdouble w, h;
+ gdouble scale_x, scale_y;
+ gdouble dashes[2] = { 2, 2 };
+
+ gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
+
+ cairo_save (cr);
+
+ cairo_rectangle (cr, 0, 0, w, h);
+
+ scale_x = 1.0;
+ scale_y = 1.0;
+ cairo_device_to_user_distance (cr, &scale_x, &scale_y);
+ cairo_scale (cr, scale_x, scale_y);
+
+ cairo_set_dash (cr, dashes, 2, 0);
+ cairo_set_line_width (cr, HANDLE_OUTLINE_WIDTH_PIXELS);
+ cairo_set_source_rgba (cr, HANDLE_OUTLINE_RGBA_ARGS);
+ cairo_stroke (cr);
+
+ cairo_restore (cr);
+
+ gl_label_object_draw_handles_box (object, cr);
+}
+
+
+
/*
* Local Variables: -- emacs
projects / glabels / blobdiff