// Sample an exitant ray
Vec3f DirectionalLight::sampleExitantRay(
const Scene& scene,
const Vec2f& emissionVertexSample,
const Vec2f& raySample,
RaySample& exitantRaySample,
float& emissionVertexPdf) const
{
Vec3f center;
float radius;
boundingSphere(scene.getBBox(), center, radius);
// Center of the disk
center += m_IncidentDirection * radius;
Vec2f pos2D = uniformSampleDisk(raySample, radius);
auto originPdf = 1.f / (pi<float>() * radius * radius);
emissionVertexPdf = 1.f;
auto pdf = originPdf * emissionVertexPdf;
auto matrix = frameY(center, m_IncidentDirection);
auto rayOrigin = Vec3f(matrix * Vec4f(pos2D.x, 0, pos2D.y, 1.f));
exitantRaySample = RaySample(Ray(rayOrigin, -m_IncidentDirection), pdf);
return m_Le;
}
gboolean
clientCkeckTitle (Client * c)
{
Client *c2;
ScreenInfo *screen_info;
guint i;
gint frame_x, frame_y, frame_width, frame_top;
frame_x = frameX (c);
frame_y = frameY (c);
frame_width = frameWidth (c);
frame_top = frameTop (c);
/* Struts and other partial struts */
screen_info = c->screen_info;
for (c2 = screen_info->clients, i = 0; i < screen_info->client_count; c2 = c2->next, i++)
{
if ((c2 != c) && clientStrutAreaOverlap (frame_x, frame_y, frame_width, frame_top, c2))
{
return FALSE;
}
}
return TRUE;
}
void
clientFill (Client * c, int fill_type)
{
ScreenInfo *screen_info;
Client *east_neighbour;
Client *west_neighbour;
Client *north_neighbour;
Client *south_neighbour;
Client *c2;
GdkRectangle rect;
XWindowChanges wc;
unsigned short mask;
guint i;
gint cx, cy, full_x, full_y, full_w, full_h;
gint tmp_x, tmp_y, tmp_w, tmp_h;
g_return_if_fail (c != NULL);
TRACE ("entering clientFill");
if (!CLIENT_CAN_FILL_WINDOW (c))
{
return;
}
screen_info = c->screen_info;
mask = 0;
east_neighbour = NULL;
west_neighbour = NULL;
north_neighbour = NULL;
south_neighbour = NULL;
for (c2 = screen_info->clients, i = 0; i < screen_info->client_count; c2 = c2->next, i++)
{
/* Filter out all windows which are not visible, or not on the same layer
* as well as the client window itself
*/
if ((c != c2) && FLAG_TEST (c2->xfwm_flags, XFWM_FLAG_VISIBLE) && (c2->win_layer == c->win_layer))
{
/* Fill horizontally */
if (fill_type & CLIENT_FILL_HORIZ)
{
/*
* check if the neigbour client (c2) is located
* east or west of our client.
*/
if (segment_overlap (frameY(c), frameY(c) + frameHeight(c), frameY(c2), frameY(c2) + frameHeight(c2)))
{
if ((frameX(c2) + frameWidth(c2)) <= frameX(c))
{
if (west_neighbour)
{
/* Check if c2 is closer to the client
* then the west neighbour already found
*/
if ((frameX(west_neighbour) + frameWidth(west_neighbour)) < (frameX(c2) + frameWidth(c2)))
{
west_neighbour = c2;
}
}
else
{
west_neighbour = c2;
}
}
if ((frameX(c) + frameWidth(c)) <= frameX(c2))
{
/* Check if c2 is closer to the client
* then the west neighbour already found
*/
if (east_neighbour)
{
if (frameX(c2) < frameX(east_neighbour))
{
east_neighbour = c2;
}
}
else
{
east_neighbour = c2;
}
}
}
}
/* Fill vertically */
if (fill_type & CLIENT_FILL_VERT)
{
/* check if the neigbour client (c2) is located
* north or south of our client.
*/
if (segment_overlap (frameX(c), frameX(c) + frameWidth(c), frameX(c2), frameX(c2) + frameWidth(c2)))
{
if ((frameY(c2) + frameHeight(c2)) <= frameY(c))
{
if (north_neighbour)
{
/* Check if c2 is closer to the client
* then the north neighbour already found
*/
if ((frameY(north_neighbour) + frameHeight(north_neighbour)) < (frameY(c2) + frameHeight(c2)))
{
north_neighbour = c2;
}
}
else
{
north_neighbour = c2;
}
}
if ((frameY(c) + frameHeight(c)) <= frameY(c2))
{
if (south_neighbour)
{
/* Check if c2 is closer to the client
* then the south neighbour already found
*/
if (frameY(c2) < frameY(south_neighbour))
{
south_neighbour = c2;
}
}
else
{
south_neighbour = c2;
}
}
}
}
}
}
/* Compute the largest size available, based on struts, margins and Xinerama layout */
tmp_x = frameX (c);
tmp_y = frameY (c);
tmp_h = frameHeight (c);
tmp_w = frameWidth (c);
cx = tmp_x + (tmp_w / 2);
cy = tmp_y + (tmp_h / 2);
myScreenFindMonitorAtPoint (screen_info, cx, cy, &rect);
full_x = MAX (screen_info->params->xfwm_margins[STRUTS_LEFT], rect.x);
full_y = MAX (screen_info->params->xfwm_margins[STRUTS_TOP], rect.y);
full_w = MIN (screen_info->width - screen_info->params->xfwm_margins[STRUTS_RIGHT],
rect.x + rect.width) - full_x;
full_h = MIN (screen_info->height - screen_info->params->xfwm_margins[STRUTS_BOTTOM],
rect.y + rect.height) - full_y;
if ((fill_type & CLIENT_FILL) == CLIENT_FILL)
{
mask = CWX | CWY | CWHeight | CWWidth;
/* Adjust size to the largest size available, not covering struts */
clientMaxSpace (screen_info, &full_x, &full_y, &full_w, &full_h);
}
else if (fill_type & CLIENT_FILL_VERT)
{
mask = CWY | CWHeight;
/* Adjust size to the tallest size available, for the current horizontal position/width */
clientMaxSpace (screen_info, &tmp_x, &full_y, &tmp_w, &full_h);
}
else if (fill_type & CLIENT_FILL_HORIZ)
{
mask = CWX | CWWidth;
/* Adjust size to the widest size available, for the current vertical position/height */
clientMaxSpace (screen_info, &full_x, &tmp_y, &full_w, &tmp_h);
}
/* If there are neighbours, resize to their borders.
* If not, resize to the largest size available that you just have computed.
*/
wc.x = full_x + frameLeft(c);
if (west_neighbour)
{
wc.x += MAX (frameX(west_neighbour) + frameWidth(west_neighbour) - full_x, 0);
}
wc.width = full_w - frameRight(c) - (wc.x - full_x);
if (east_neighbour)
{
wc.width -= MAX (full_w - (frameX(east_neighbour) - full_x), 0);
}
wc.y = full_y + frameTop(c);
if (north_neighbour)
{
wc.y += MAX (frameY(north_neighbour) + frameHeight(north_neighbour) - full_y, 0);
}
wc.height = full_h - frameBottom(c) - (wc.y - full_y);
if (south_neighbour)
{
wc.height -= MAX (full_h - (frameY(south_neighbour) - full_y), 0);
}
TRACE ("Fill size request: (%d,%d) %dx%d", wc.x, wc.y, wc.width, wc.height);
if (FLAG_TEST (c->xfwm_flags, XFWM_FLAG_MANAGED))
{
clientConfigure(c, &wc, mask, NO_CFG_FLAG);
}
}
void
clientInitPosition (Client * c)
{
ScreenInfo *screen_info;
Client *c2;
GdkRectangle rect;
int full_x, full_y, full_w, full_h, msx, msy;
gint n_monitors;
gboolean place;
gboolean position;
g_return_if_fail (c != NULL);
TRACE ("entering clientInitPosition");
screen_info = c->screen_info;
msx = 0;
msy = 0;
position = (c->size->flags & (PPosition | USPosition));
n_monitors = myScreenGetNumMonitors (c->screen_info);
if ((n_monitors > 1) || (screen_info->params->placement_mode == PLACE_MOUSE))
{
getMouseXY (screen_info, screen_info->xroot, &msx, &msy);
myScreenFindMonitorAtPoint (screen_info, msx, msy, &rect);
}
else
{
gdk_screen_get_monitor_geometry (screen_info->gscr, 0, &rect);
}
if (position || (c->type & (WINDOW_TYPE_DONT_PLACE | WINDOW_TYPE_DIALOG)) || clientIsTransient (c))
{
if (!position && clientIsTransient (c) && (c2 = clientGetTransient (c)))
{
/* Center transient relative to their parent window */
c->x = c2->x + (c2->width - c->width) / 2;
c->y = c2->y + (c2->height - c->height) / 2;
if (n_monitors > 1)
{
msx = frameX (c) + (frameWidth (c) / 2);
msy = frameY (c) + (frameHeight (c) / 2);
myScreenFindMonitorAtPoint (screen_info, msx, msy, &rect);
}
}
if (CONSTRAINED_WINDOW (c))
{
clientKeepVisible (c, n_monitors, &rect);
}
place = FALSE;
}
else
{
place = TRUE;
}
full_x = MAX (screen_info->params->xfwm_margins[STRUTS_LEFT], rect.x);
full_y = MAX (screen_info->params->xfwm_margins[STRUTS_TOP], rect.y);
full_w = MIN (screen_info->width - screen_info->params->xfwm_margins[STRUTS_RIGHT],
rect.x + rect.width) - full_x;
full_h = MIN (screen_info->height - screen_info->params->xfwm_margins[STRUTS_BOTTOM],
rect.y + rect.height) - full_y;
/* Adjust size to the widest size available, not covering struts */
clientMaxSpace (screen_info, &full_x, &full_y, &full_w, &full_h);
/*
If the windows is smaller than the given ratio of the available screen area,
or if the window is larger than the screen area or if the given ratio is higher
than 100% place the window at the center.
Otherwise, place the window "smartly", using the good old CPU consuming algorithm...
*/
if (place)
{
if ((screen_info->params->placement_ratio >= 100) ||
(100 * frameWidth(c) * frameHeight(c)) < (screen_info->params->placement_ratio * full_w * full_h))
{
if (screen_info->params->placement_mode == PLACE_MOUSE)
{
mousePlacement (c, full_x, full_y, full_w, full_h, msx, msy);
}
else
{
centerPlacement (c, full_x, full_y, full_w, full_h);
}
}
else if ((frameWidth(c) >= full_w) && (frameHeight(c) >= full_h))
{
centerPlacement (c, full_x, full_y, full_w, full_h);
}
else
{
smartPlacement (c, full_x, full_y, full_w, full_h);
}
}
if (c->type & WINDOW_REGULAR_FOCUSABLE)
{
clientAutoMaximize (c, full_w, full_h);
}
}
static void
smartPlacement (Client * c, int full_x, int full_y, int full_w, int full_h)
{
Client *c2;
ScreenInfo *screen_info;
gfloat best_overlaps;
guint i;
gint test_x, test_y, xmax, ymax, best_x, best_y;
gint frame_height, frame_width, frame_left, frame_top;
gboolean first;
gint c2_x, c2_y;
g_return_if_fail (c != NULL);
TRACE ("entering smartPlacement");
screen_info = c->screen_info;
frame_height = frameHeight (c);
frame_width = frameWidth (c);
frame_left = frameLeft(c);
frame_top = frameTop (c);
test_x = 0;
test_y = 0;
best_overlaps = 0.0;
first = TRUE;
xmax = full_x + full_w - c->width - frameRight (c);
ymax = full_y + full_h - c->height - frameBottom (c);
best_x = full_x + frameLeft (c);
best_y = full_y + frameTop (c);
test_y = full_y + frameTop (c);
do
{
test_x = full_x + frameLeft (c);
do
{
gfloat count_overlaps = 0.0;
TRACE ("analyzing %i clients", screen_info->client_count);
for (c2 = screen_info->clients, i = 0; i < screen_info->client_count; c2 = c2->next, i++)
{
if ((c2 != c) && (c2->type != WINDOW_DESKTOP)
&& (c->win_workspace == c2->win_workspace)
&& FLAG_TEST (c2->xfwm_flags, XFWM_FLAG_VISIBLE))
{
c2_x = frameX (c2);
c2_y = frameY (c2);
count_overlaps += overlap (test_x - frame_left,
test_y - frame_top,
test_x - frame_left + frame_width,
test_y - frame_top + frame_height,
c2_x,
c2_y,
c2_x + frameWidth (c2),
c2_y + frameHeight (c2));
}
}
if (count_overlaps < 0.1)
{
TRACE ("overlaps is 0 so it's the best we can get");
c->x = test_x;
c->y = test_y;
return;
}
else if ((count_overlaps < best_overlaps) || (first))
{
best_x = test_x;
best_y = test_y;
best_overlaps = count_overlaps;
}
if (first)
{
first = FALSE;
}
test_x += 8;
}
while (test_x <= xmax);
test_y += 8;
}
while (test_y <= ymax);
c->x = best_x;
c->y = best_y;
}
/* clientConstrainPos() is used when moving windows
to ensure that the window stays accessible to the user
Returns the position in which the window was constrained.
CLIENT_CONSTRAINED_TOP = 1<<0
CLIENT_CONSTRAINED_BOTTOM = 1<<1
CLIENT_CONSTRAINED_LEFT = 1<<2
CLIENT_CONSTRAINED_RIGHT = 1<<3
*/
unsigned int
clientConstrainPos (Client * c, gboolean show_full)
{
Client *c2;
ScreenInfo *screen_info;
guint i;
gint cx, cy, disp_x, disp_y, disp_max_x, disp_max_y;
gint frame_height, frame_width, frame_top, frame_left;
gint frame_x, frame_y, frame_visible;
gint screen_width, screen_height;
guint ret;
GdkRectangle rect;
gint min_visible;
g_return_val_if_fail (c != NULL, 0);
TRACE ("entering clientConstrainPos %s",
show_full ? "(with show full)" : "(w/out show full)");
TRACE ("client \"%s\" (0x%lx)", c->name, c->window);
/* We use a bunch of local vars to reduce the overhead of calling other functions all the time */
frame_x = frameX (c);
frame_y = frameY (c);
frame_height = frameHeight (c);
frame_width = frameWidth (c);
frame_top = frameTop (c);
frame_left = frameLeft (c);
frame_visible = (frame_top ? frame_top : frame_height);
min_visible = MAX (frame_top, CLIENT_MIN_VISIBLE);
ret = 0;
cx = frame_x + (frame_width / 2);
cy = frame_y + (frame_height / 2);
screen_info = c->screen_info;
myScreenFindMonitorAtPoint (screen_info, cx, cy, &rect);
screen_width = screen_info->width;
screen_height = screen_info->height;
disp_x = rect.x;
disp_y = rect.y;
disp_max_x = rect.x + rect.width;
disp_max_y = rect.y + rect.height;
if (FLAG_TEST (c->flags, CLIENT_FLAG_FULLSCREEN))
{
TRACE ("ignoring constrained for client \"%s\" (0x%lx)", c->name,
c->window);
return 0;
}
if (show_full)
{
/* Struts and other partial struts */
for (c2 = screen_info->clients, i = 0; i < screen_info->client_count; c2 = c2->next, i++)
{
if (FLAG_TEST (c2->flags, CLIENT_FLAG_HAS_STRUT)
&& FLAG_TEST (c2->xfwm_flags, XFWM_FLAG_VISIBLE)
&& (c2 != c))
{
/* Right */
if (segment_overlap (frame_y, frame_y + frame_height,
c2->struts[STRUTS_RIGHT_START_Y], c2->struts[STRUTS_RIGHT_END_Y]))
{
if (segment_overlap (frame_x, frame_x + frame_width,
screen_width - c2->struts[STRUTS_RIGHT],
screen_width))
{
c->x = screen_width - c2->struts[STRUTS_RIGHT] - frame_width + frame_left;
frame_x = frameX (c);
ret |= CLIENT_CONSTRAINED_RIGHT;
}
}
/* Bottom */
if (segment_overlap (frame_x, frame_x + frame_width,
c2->struts[STRUTS_BOTTOM_START_X], c2->struts[STRUTS_BOTTOM_END_X]))
{
if (segment_overlap (frame_y, frame_y + frame_height,
screen_height - c2->struts[STRUTS_BOTTOM],
screen_height))
{
c->y = screen_height - c2->struts[STRUTS_BOTTOM] - frame_height + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_BOTTOM;
}
}
}
}
if (frame_x + frame_width >= disp_max_x)
{
c->x = disp_max_x - frame_width + frame_left;
frame_x = frameX (c);
ret |= CLIENT_CONSTRAINED_RIGHT;
}
if (frame_x <= disp_x)
{
c->x = disp_x + frame_left;
frame_x = frameX (c);
ret |= CLIENT_CONSTRAINED_LEFT;
}
if (frame_y + frame_height >= disp_max_y)
{
c->y = disp_max_y - frame_height + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_BOTTOM;
}
if (frame_y <= disp_y)
{
c->y = disp_y + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_TOP;
}
for (c2 = screen_info->clients, i = 0; i < screen_info->client_count; c2 = c2->next, i++)
{
if (FLAG_TEST (c2->flags, CLIENT_FLAG_HAS_STRUT)
&& FLAG_TEST (c2->xfwm_flags, XFWM_FLAG_VISIBLE)
&& (c2 != c))
{
/* Left */
if (segment_overlap (frame_y, frame_y + frame_height,
c2->struts[STRUTS_LEFT_START_Y], c2->struts[STRUTS_LEFT_END_Y]))
{
if (segment_overlap (frame_x, frame_x + frame_width,
0, c2->struts[STRUTS_LEFT]))
{
c->x = c2->struts[STRUTS_LEFT] + frame_left;
frame_x = frameX (c);
ret |= CLIENT_CONSTRAINED_LEFT;
}
}
/* Top */
if (segment_overlap (frame_x,
frame_x + frame_width,
c2->struts[STRUTS_TOP_START_X],
c2->struts[STRUTS_TOP_END_X]))
{
if (segment_overlap (frame_y, frame_y + frame_height,
0, c2->struts[STRUTS_TOP]))
{
c->y = c2->struts[STRUTS_TOP] + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_TOP;
}
}
}
}
}
else
{
if (frame_x + frame_width <= disp_x + min_visible)
{
c->x = disp_x + min_visible - frame_width + frame_left;
frame_x = frameX (c);
ret |= CLIENT_CONSTRAINED_LEFT;
}
if (frame_x + min_visible >= disp_max_x)
{
c->x = disp_max_x - min_visible + frame_left;
frame_x = frameX (c);
ret |= CLIENT_CONSTRAINED_RIGHT;
}
if (frame_y + frame_height <= disp_y + min_visible)
{
c->y = disp_y + min_visible - frame_height + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_TOP;
}
if (frame_y + min_visible >= disp_max_y)
{
c->y = disp_max_y - min_visible + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_BOTTOM;
}
if ((frame_y <= disp_y) && (frame_y >= disp_y - frame_top))
{
c->y = disp_y + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_TOP;
}
/* Struts and other partial struts */
for (c2 = screen_info->clients, i = 0; i < screen_info->client_count; c2 = c2->next, i++)
{
if (FLAG_TEST (c2->flags, CLIENT_FLAG_HAS_STRUT)
&& FLAG_TEST (c2->xfwm_flags, XFWM_FLAG_VISIBLE)
&& (c2 != c))
{
/* Right */
if (segment_overlap (frame_y, frame_y + frame_height,
c2->struts[STRUTS_RIGHT_START_Y], c2->struts[STRUTS_RIGHT_END_Y]))
{
if (frame_x >= screen_width - c2->struts[STRUTS_RIGHT] - min_visible)
{
c->x = screen_width - c2->struts[STRUTS_RIGHT] - min_visible + frame_left;
frame_x = frameX (c);
ret |= CLIENT_CONSTRAINED_RIGHT;
}
}
/* Left */
if (segment_overlap (frame_y, frame_y + frame_height,
c2->struts[STRUTS_LEFT_START_Y], c2->struts[STRUTS_LEFT_END_Y]))
{
if (frame_x + frame_width <= c2->struts[STRUTS_LEFT] + min_visible)
{
c->x = c2->struts[STRUTS_LEFT] + min_visible - frame_width + frame_left;
frame_x = frameX (c);
ret |= CLIENT_CONSTRAINED_LEFT;
}
}
/* Bottom */
if (segment_overlap (frame_x, frame_x + frame_width,
c2->struts[STRUTS_BOTTOM_START_X], c2->struts[STRUTS_BOTTOM_END_X]))
{
if (frame_y >= screen_height - c2->struts[STRUTS_BOTTOM] - min_visible)
{
c->y = screen_height - c2->struts[STRUTS_BOTTOM] - min_visible + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_BOTTOM;
}
}
/* Top */
if (segment_overlap (frame_x, frame_x + frame_width,
c2->struts[STRUTS_TOP_START_X], c2->struts[STRUTS_TOP_END_X]))
{
if (segment_overlap (frame_y, frame_y + frame_visible, 0, c2->struts[STRUTS_TOP]))
{
c->y = c2->struts[STRUTS_TOP] + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_TOP;
}
if (frame_y + frame_height <= c2->struts[STRUTS_TOP] + min_visible)
{
c->y = c2->struts[STRUTS_TOP] + min_visible - frame_height + frame_top;
frame_y = frameY (c);
ret |= CLIENT_CONSTRAINED_TOP;
}
}
}
}
}
return ret;
}