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ext/pango/gsttextoverlay.*: API: add "line-alignment" property (#459334). Add gtk-doc blurb for "silent" property so ...

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Original commit message from CVS:
Patch by: Dan Williams  <dcbw redhat com>
* ext/pango/gsttextoverlay.c:
* ext/pango/gsttextoverlay.h:
API: add "line-alignment" property (#459334). Add gtk-doc blurb for
"silent" property so there's a Since tag in the API reference.
This commit is contained in:
Dan Williams 2007-08-13 15:26:54 +00:00 committed by Tim-Philipp Müller
parent 4147da026a
commit 4200d788bc
3 changed files with 76 additions and 2 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2007-08-13 Tim-Philipp Müller <tim at centricular dot net>
Patch by: Dan Williams <dcbw redhat com>
* ext/pango/gsttextoverlay.c:
* ext/pango/gsttextoverlay.h:
API: add "line-alignment" property (#459334). Add gtk-doc blurb for
"silent" property so there's a Since tag in the API reference.
2007-08-12 Wim Taymans <wim.taymans@gmail.com>
* gst-libs/gst/rtp/gstbasertppayload.c:

54
ext/pango/gsttextoverlay.c
View file

@ -115,6 +115,7 @@ GST_ELEMENT_DETAILS ("Text overlay",
#define DEFAULT_PROP_WRAP_MODE GST_TEXT_OVERLAY_WRAP_MODE_WORD_CHAR
#define DEFAULT_PROP_FONT_DESC ""
#define DEFAULT_PROP_SILENT FALSE
#define DEFAULT_PROP_LINE_ALIGNMENT GST_TEXT_OVERLAY_LINE_ALIGN_CENTER
/* make a property of me */
#define DEFAULT_SHADING_VALUE -80
@ -134,7 +135,8 @@ enum
PROP_DELTAY,
PROP_WRAP_MODE,
PROP_FONT_DESC,
PROP_SILENT
PROP_SILENT,
PROP_LINE_ALIGNMENT
};
@ -220,6 +222,26 @@ gst_text_overlay_wrap_mode_get_type (void)
return text_overlay_wrap_mode_type;
}
#define GST_TYPE_TEXT_OVERLAY_LINE_ALIGN (gst_text_overlay_line_align_get_type())
static GType
gst_text_overlay_line_align_get_type (void)
{
static GType text_overlay_line_align_type = 0;
static const GEnumValue text_overlay_line_align[] = {
{GST_TEXT_OVERLAY_LINE_ALIGN_LEFT, "left", "left"},
{GST_TEXT_OVERLAY_LINE_ALIGN_CENTER, "center", "center"},
{GST_TEXT_OVERLAY_LINE_ALIGN_RIGHT, "right", "right"},
{0, NULL, NULL}
};
if (!text_overlay_line_align_type) {
text_overlay_line_align_type =
g_enum_register_static ("GstTextOverlayLineAlign",
text_overlay_line_align);
}
return text_overlay_line_align_type;
}
/* These macros are adapted from videotestsrc.c */
#define I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width))
#define I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2)
@ -358,6 +380,26 @@ gst_text_overlay_class_init (GstTextOverlayClass * klass)
"Pango font description of font to be used for rendering. "
"See documentation of pango_font_description_from_string "
"for syntax.", DEFAULT_PROP_FONT_DESC, G_PARAM_WRITABLE));
/**
* GstTextOverlay:line-alignment
*
* Alignment of text lines relative to each other (for multi-line text)
*
* Since: 0.10.15
**/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_LINE_ALIGNMENT,
g_param_spec_enum ("line-alignment", "line alignment",
"Alignment of text lines relative to each other.",
GST_TYPE_TEXT_OVERLAY_LINE_ALIGN, DEFAULT_PROP_LINE_ALIGNMENT,
G_PARAM_READWRITE));
/**
* GstTextOverlay:silent
*
* If set, no text is rendered. Useful to switch off text rendering
* temporarily without removing the textoverlay element from the pipeline.
*
* Since: 0.10.15
**/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SILENT,
g_param_spec_boolean ("silent", "silent",
"Whether to render the text string",
@ -442,9 +484,10 @@ gst_text_overlay_init (GstTextOverlay * overlay, GstTextOverlayClass * klass)
GST_DEBUG_FUNCPTR (gst_text_overlay_src_event));
gst_element_add_pad (GST_ELEMENT (overlay), overlay->srcpad);
overlay->line_align = DEFAULT_PROP_LINE_ALIGNMENT;
overlay->layout =
pango_layout_new (GST_TEXT_OVERLAY_GET_CLASS (overlay)->pango_context);
pango_layout_set_alignment (overlay->layout, PANGO_ALIGN_CENTER);
pango_layout_set_alignment (overlay->layout, overlay->line_align);
memset (&overlay->bitmap, 0, sizeof (overlay->bitmap));
overlay->halign = DEFAULT_PROP_HALIGNMENT;
@ -640,6 +683,10 @@ gst_text_overlay_set_property (GObject * object, guint prop_id,
case PROP_SILENT:
overlay->silent = g_value_get_boolean (value);
break;
case PROP_LINE_ALIGNMENT:
overlay->line_align = g_value_get_enum (value);
pango_layout_set_alignment (overlay->layout, overlay->line_align);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -687,6 +734,9 @@ gst_text_overlay_get_property (GObject * object, guint prop_id,
case PROP_SILENT:
g_value_set_boolean (value, overlay->silent);
break;
case PROP_LINE_ALIGNMENT:
g_value_set_enum (value, overlay->line_align);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;

15
ext/pango/gsttextoverlay.h
View file

@ -65,6 +65,20 @@ typedef enum {
GST_TEXT_OVERLAY_WRAP_MODE_WORD_CHAR = PANGO_WRAP_WORD_CHAR
} GstTextOverlayWrapMode;
/**
* GstTextOverlayLineAlign:
* @GST_TEXT_OVERLAY_LINE_ALIGN_LEFT: lines are left-aligned
* @GST_TEXT_OVERLAY_LINE_ALIGN_CENTER: lines are center-aligned
* @GST_TEXT_OVERLAY_LINE_ALIGN_RIGHT: lines are right-aligned
*
* Alignment of text lines relative to each other
*/
typedef enum {
GST_TEXT_OVERLAY_LINE_ALIGN_LEFT = PANGO_ALIGN_LEFT,
GST_TEXT_OVERLAY_LINE_ALIGN_CENTER = PANGO_ALIGN_CENTER,
GST_TEXT_OVERLAY_LINE_ALIGN_RIGHT = PANGO_ALIGN_RIGHT
} GstTextOverlayLineAlign;
/**
* GstTextOverlay:
*
@ -98,6 +112,7 @@ struct _GstTextOverlay {
GstTextOverlayVAlign valign;
GstTextOverlayHAlign halign;
GstTextOverlayWrapMode wrap_mode;
GstTextOverlayLineAlign line_align;
gint xpad;
gint ypad;