/*
* Create a CRTC
*/
RRCrtcPtr
RRCrtcCreate (ScreenPtr pScreen, void *devPrivate)
{
RRCrtcPtr crtc;
RRCrtcPtr *crtcs;
rrScrPrivPtr pScrPriv;
if (!RRInit())
return NULL;
pScrPriv = rrGetScrPriv(pScreen);
/* make space for the crtc pointer */
if (pScrPriv->numCrtcs)
crtcs = realloc(pScrPriv->crtcs,
(pScrPriv->numCrtcs + 1) * sizeof (RRCrtcPtr));
else
crtcs = malloc(sizeof (RRCrtcPtr));
if (!crtcs)
return FALSE;
pScrPriv->crtcs = crtcs;
crtc = calloc(1, sizeof (RRCrtcRec));
if (!crtc)
return NULL;
crtc->id = FakeClientID (0);
crtc->pScreen = pScreen;
crtc->mode = NULL;
crtc->x = 0;
crtc->y = 0;
crtc->rotation = RR_Rotate_0;
crtc->rotations = RR_Rotate_0;
crtc->outputs = NULL;
crtc->numOutputs = 0;
crtc->gammaSize = 0;
crtc->gammaRed = crtc->gammaBlue = crtc->gammaGreen = NULL;
crtc->changed = FALSE;
crtc->devPrivate = devPrivate;
RRTransformInit (&crtc->client_pending_transform);
RRTransformInit (&crtc->client_current_transform);
pixman_transform_init_identity (&crtc->transform);
pixman_f_transform_init_identity (&crtc->f_transform);
pixman_f_transform_init_identity (&crtc->f_inverse);
if (!AddResource (crtc->id, RRCrtcType, (pointer) crtc))
return NULL;
/* attach the screen and crtc together */
crtc->pScreen = pScreen;
pScrPriv->crtcs[pScrPriv->numCrtcs++] = crtc;
return crtc;
}
static void
rescale (GtkWidget *may_be_null, app_t *app)
{
pixman_f_transform_t ftransform;
pixman_transform_t transform;
double new_width, new_height;
double fscale_x, fscale_y;
double rotation;
pixman_fixed_t *params;
int n_params;
double sx, sy;
pixman_f_transform_init_identity (&ftransform);
if (may_be_null && gtk_toggle_button_get_active (
GTK_TOGGLE_BUTTON (get_widget (app, "lock_checkbutton"))))
{
copy_to_counterpart (app, G_OBJECT (may_be_null));
}
fscale_x = gtk_adjustment_get_value (app->scale_x_adjustment);
fscale_y = gtk_adjustment_get_value (app->scale_y_adjustment);
rotation = gtk_adjustment_get_value (app->rotate_adjustment);
fscale_x = to_scale (fscale_x);
fscale_y = to_scale (fscale_y);
new_width = pixman_image_get_width (app->original) * fscale_x;
new_height = pixman_image_get_height (app->original) * fscale_y;
pixman_f_transform_scale (&ftransform, NULL, fscale_x, fscale_y);
pixman_f_transform_translate (&ftransform, NULL, - new_width / 2.0, - new_height / 2.0);
rotation = (rotation / 360.0) * 2 * M_PI;
pixman_f_transform_rotate (&ftransform, NULL, cos (rotation), sin (rotation));
pixman_f_transform_translate (&ftransform, NULL, new_width / 2.0, new_height / 2.0);
pixman_f_transform_invert (&ftransform, &ftransform);
compute_extents (&ftransform, &sx, &sy);
pixman_transform_from_pixman_f_transform (&transform, &ftransform);
pixman_image_set_transform (app->original, &transform);
params = pixman_filter_create_separable_convolution (
&n_params,
sx * 65536.0 + 0.5,
sy * 65536.0 + 0.5,
get_value (app, filters, "reconstruct_x_combo_box"),
get_value (app, filters, "reconstruct_y_combo_box"),
get_value (app, filters, "sample_x_combo_box"),
get_value (app, filters, "sample_y_combo_box"),
gtk_adjustment_get_value (app->subsample_adjustment),
gtk_adjustment_get_value (app->subsample_adjustment));
pixman_image_set_filter (app->original, PIXMAN_FILTER_SEPARABLE_CONVOLUTION, params, n_params);
pixman_image_set_repeat (
app->original, get_value (app, repeats, "repeat_combo_box"));
free (params);
app->scaled_width = ceil (new_width);
app->scaled_height = ceil (new_height);
gtk_widget_set_size_request (
get_widget (app, "drawing_area"), new_width + 0.5, new_height + 0.5);
gtk_widget_queue_draw (
get_widget (app, "drawing_area"));
}
