e91e8e993d
To each .c and .h file, add: /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ 'gnu' is the default anyways for Emacs, but indent-tabs-mode is not, so this sets things up to correspond to the policy of no-tabs. http://bugzilla.moblin.org/show_bug.cgi?id=6467
113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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#include "st-private.h"
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/* Utility function to modify a child allocation box with respect to the
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* x/y-fill child properties. Expects childbox to contain the available
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* allocation space.
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*/
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void
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_st_allocate_fill (ClutterActor *child,
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ClutterActorBox *childbox,
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StAlign x_alignment,
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StAlign y_alignment,
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gboolean x_fill,
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gboolean y_fill)
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{
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gfloat natural_width, natural_height;
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gfloat min_width, min_height;
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gfloat child_width, child_height;
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gfloat available_width, available_height;
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ClutterRequestMode request;
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ClutterActorBox allocation = { 0, };
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gdouble x_align, y_align;
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if (x_alignment == ST_ALIGN_START)
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x_align = 0.0;
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else if (x_alignment == ST_ALIGN_MIDDLE)
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x_align = 0.5;
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else
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x_align = 1.0;
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if (y_alignment == ST_ALIGN_START)
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y_align = 0.0;
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else if (y_alignment == ST_ALIGN_MIDDLE)
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y_align = 0.5;
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else
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y_align = 1.0;
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available_width = childbox->x2 - childbox->x1;
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available_height = childbox->y2 - childbox->y1;
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if (available_width < 0)
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available_width = 0;
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if (available_height < 0)
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available_height = 0;
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if (x_fill)
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{
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allocation.x1 = childbox->x1;
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allocation.x2 = (int)(allocation.x1 + available_width);
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}
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if (y_fill)
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{
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allocation.y1 = childbox->y1;
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allocation.y2 = (int)(allocation.y1 + available_height);
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}
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/* if we are filling horizontally and vertically then we're done */
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if (x_fill && y_fill)
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{
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*childbox = allocation;
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return;
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}
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request = CLUTTER_REQUEST_HEIGHT_FOR_WIDTH;
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g_object_get (G_OBJECT (child), "request-mode", &request, NULL);
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if (request == CLUTTER_REQUEST_HEIGHT_FOR_WIDTH)
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{
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clutter_actor_get_preferred_width (child, available_height,
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&min_width,
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&natural_width);
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child_width = CLAMP (natural_width, min_width, available_width);
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clutter_actor_get_preferred_height (child, child_width,
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&min_height,
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&natural_height);
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child_height = CLAMP (natural_height, min_height, available_height);
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}
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else
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{
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clutter_actor_get_preferred_height (child, available_width,
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&min_height,
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&natural_height);
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child_height = CLAMP (natural_height, min_height, available_height);
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clutter_actor_get_preferred_width (child, child_height,
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&min_width,
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&natural_width);
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child_width = CLAMP (natural_width, min_width, available_width);
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}
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if (!x_fill)
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{
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allocation.x1 = childbox->x1 + (int)((available_width - child_width) * x_align);
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allocation.x2 = allocation.x1 + (int) child_width;
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}
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if (!y_fill)
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{
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allocation.y1 = childbox->y1 + (int)((available_height - child_height) * y_align);
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allocation.y2 = allocation.y1 + (int) child_height;
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}
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*childbox = allocation;
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}
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