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widget: Remove gtk_widget_draw()

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If you want to draw a widget to cairo today, you create a widget
paintable, snapshot it to a render node and then draw the render node to
cairo.

And yes, this is that complicated on purpose. Don't draw widgets to
Cairo.
This commit is contained in:
Benjamin Otte 2018-04-02 08:28:34 +02:00
parent 4a513b7800
commit c06a790694
3 changed files with 0 additions and 44 deletions
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1
docs/reference/gtk/gtk4-sections.txt
View File

@ -4238,7 +4238,6 @@ gtk_widget_map
gtk_widget_unmap
gtk_widget_realize
gtk_widget_unrealize
gtk_widget_draw
gtk_widget_queue_draw
gtk_widget_queue_resize
gtk_widget_queue_resize_no_redraw

40
gtk/gtkwidget.c
View File

@ -5379,46 +5379,6 @@ gtk_widget_draw_internal (GtkWidget *widget,
}
}
/**
* gtk_widget_draw:
* @widget: the widget to draw. It must be drawable (see
* gtk_widget_is_drawable()) and a size must have been allocated.
* @cr: a cairo context to draw to
*
* Draws @widget to @cr. The top left corner of the widget will be
* drawn to the currently set origin point of @cr.
*
* You should pass a cairo context as @cr argument that is in an
* original state. Otherwise the resulting drawing is undefined. For
* example changing the operator using cairo_set_operator() or the
* line width using cairo_set_line_width() might have unwanted side
* effects.
* You may however change the context’s transform matrix - like with
* cairo_scale(), cairo_translate() or cairo_set_matrix() and clip
* region with cairo_clip() prior to calling this function. Also, it
* is fine to modify the context with cairo_save() and
* cairo_push_group() prior to calling this function.
*
* Note that special-purpose widgets may contain special code for
* rendering to the screen and might appear differently on screen
* and when rendered using gtk_widget_draw().
**/
void
gtk_widget_draw (GtkWidget *widget,
cairo_t *cr)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (!widget->priv->alloc_needed);
g_return_if_fail (!widget->priv->alloc_needed_on_child);
g_return_if_fail (cr != NULL);
cairo_save (cr);
gtk_widget_draw_internal (widget, cr);
cairo_restore (cr);
}
static gboolean
gtk_widget_real_key_press_event (GtkWidget *widget,
GdkEventKey *event)

3
gtk/gtkwidget.h
View File

@ -408,9 +408,6 @@ void gtk_widget_realize (GtkWidget *widget);
GDK_AVAILABLE_IN_ALL
void gtk_widget_unrealize (GtkWidget *widget);
GDK_AVAILABLE_IN_ALL
void gtk_widget_draw (GtkWidget *widget,
cairo_t *cr);
/* Queuing draws */
GDK_AVAILABLE_IN_ALL
void gtk_widget_queue_draw (GtkWidget *widget);