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aspect ratios should take base size into account, fix size hint initialization

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This commit is contained in:
Mark Tiefenbruck 2008-08-15 04:16:30 -07:00
parent 6053ecc1b5
commit 1dab657708
2 changed files with 109 additions and 105 deletions
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94
src/FbWinFrame.cc
View file

@ -1689,6 +1689,14 @@ void closestPointToAspect(unsigned int &ret_x, unsigned int &ret_y,
ret_y = static_cast<unsigned int>(u * aspect_y);
}
unsigned int increaseToMultiple(unsigned int val, unsigned int inc) {
return val % inc ? val + inc - (val % inc) : val;
}
unsigned int decreaseToMultiple(unsigned int val, unsigned int inc) {
return val % inc ? val - (val % inc) : val;
}
/**
* Changes width and height to the nearest (lower) value
* that conforms to it's size hints.
@ -1700,12 +1708,7 @@ void closestPointToAspect(unsigned int &ret_x, unsigned int &ret_y,
* See ICCCM section 4.1.2.3
*/
void FbWinFrame::SizeHints::apply(unsigned int &width, unsigned int &height,
bool maximizing) const {
// we apply aspect ratios before incrementals
// Too difficult to exactly satisfy both incremental+aspect
// in most situations
// (they really shouldn't happen at the same time anyway).
bool make_fit) const {
/* aspect ratios are applied exclusive to the base size
*
@ -1713,8 +1716,6 @@ void FbWinFrame::SizeHints::apply(unsigned int &width, unsigned int &height,
* ------------ < ------- < ------------
* min_aspect_y height max_aspect_y
*
* beware of integer maximum (so I'll use doubles instead and divide)
*
* The trick is how to get back to the aspect ratio with minimal
* change - do we modify x, y or both?
* A: we minimise the distance between the current point, and
@ -1722,43 +1723,62 @@ void FbWinFrame::SizeHints::apply(unsigned int &width, unsigned int &height,
* Consider that the aspect ratio is a line, and the current
* w/h is a point, so we're just using the formula for
* shortest distance from a point to a line!
*
* When maximizing, we must not increase any of the sizes, because we
* would end up with the window partly off a screen, so a simpler formula
* is used in that case.
*/
if (min_aspect_y > 0 && width*min_aspect_y < min_aspect_x*height) {
if (maximizing)
height = width * min_aspect_y / min_aspect_x;
else
closestPointToAspect(width, height, width, height,
min_aspect_x, min_aspect_y);
} else if (max_aspect_x > 0 && width*max_aspect_y > max_aspect_x*height) {
if (maximizing)
width = height * max_aspect_x / max_aspect_y;
else
closestPointToAspect(width, height, width, height,
max_aspect_x, max_aspect_y);
// make respective to base_size
unsigned int w = width - base_width, h = height - base_height;
if (min_aspect_y > 0 && w * min_aspect_y < min_aspect_x * h) {
closestPointToAspect(w, h, w, h, min_aspect_x, min_aspect_y);
// new w must be > old w, new h must be < old h
w = increaseToMultiple(w, width_inc);
h = decreaseToMultiple(h, height_inc);
} else if (max_aspect_x > 0 && w * max_aspect_y > max_aspect_x * h) {
closestPointToAspect(w, h, w, h, max_aspect_x, max_aspect_y);
// new w must be < old w, new h must be > old h
w = decreaseToMultiple(w, width_inc);
h = increaseToMultiple(h, height_inc);
}
// Check minimum size
if (width < min_width)
width = min_width;
if (w + base_width < min_width) {
w = increaseToMultiple(min_width - base_width, width_inc);
// need to check maximum aspect again
if (max_aspect_x > 0 && w * max_aspect_y > max_aspect_x * h)
h = increaseToMultiple(w * max_aspect_y / max_aspect_x, height_inc);
}
if (height < min_height)
height = min_height;
if (h + base_height < min_height) {
h = increaseToMultiple(min_height - base_height, height_inc);
// need to check minimum aspect again
if (min_aspect_y > 0 && w * min_aspect_y < min_aspect_x * h)
w = increaseToMultiple(h * min_aspect_x / min_aspect_y, width_inc);
}
unsigned int max_w = make_fit && (width < max_width || max_width == 0) ?
width : max_width;
unsigned int max_h = make_fit && (height < max_height || max_height == 0) ?
height : max_height;
// Check maximum size
if (max_width > 0 && width > max_width)
width = max_width;
if (max_w > 0 && w + base_width > max_w)
w = max_w - base_width;
if (max_height > 0 && height > max_height)
height = max_height;
if (max_h > 0 && h + base_height > max_h)
h = max_h - base_height;
// enforce incremental size limits, wrt base size
width -= (width - base_width) % width_inc;
height -= (height - base_height) % height_inc;
w = decreaseToMultiple(w, width_inc);
h = decreaseToMultiple(h, height_inc);
// need to check aspects one more time
if (min_aspect_y > 0 && w * min_aspect_y < min_aspect_x * h)
h = decreaseToMultiple(w * min_aspect_y / min_aspect_x, height_inc);
if (max_aspect_x > 0 && w * max_aspect_y > max_aspect_x * h)
w = decreaseToMultiple(h * max_aspect_x / max_aspect_y, width_inc);
width = w + base_width;
height = h + base_height;
}
// check if the given width and height satisfy the size hints
@ -1775,10 +1795,10 @@ bool FbWinFrame::SizeHints::valid(unsigned int w, unsigned int h) const {
if ((h - base_height) % height_inc != 0)
return false;
if (min_aspect_x * h > w * min_aspect_y)
if (min_aspect_x * (h - base_height) > (w - base_width) * min_aspect_y)
return false;
if (max_aspect_x * h < w * max_aspect_y)
if (max_aspect_x * (h - base_height) < (w - base_width) * max_aspect_y)
return false;
return true;

120
src/WinClient.cc
View file

@ -82,14 +82,6 @@ WinClient::WinClient(Window win, BScreen &screen, FluxboxWindow *fbwin):
m_mwm_hint(0),
m_strut(0) {
m_size_hints.min_width = m_size_hints.min_height =
m_size_hints.width_inc = m_size_hints.height_inc =
m_size_hints.base_width = m_size_hints.base_height = 1;
m_size_hints.max_width = m_size_hints.max_height =
m_size_hints.min_aspect_x = m_size_hints.min_aspect_y =
m_size_hints.max_aspect_x = m_size_hints.max_aspect_y = 0;
updateWMProtocols();
updateMWMHints();
updateWMHints();
@ -471,73 +463,65 @@ void WinClient::updateWMHints() {
void WinClient::updateWMNormalHints() {
long icccm_mask;
XSizeHints sizehint;
if (! XGetWMNormalHints(display(), window(), &sizehint, &icccm_mask)) {
m_size_hints.min_width = m_size_hints.min_height =
m_size_hints.base_width = m_size_hints.base_height =
m_size_hints.width_inc = m_size_hints.height_inc = 1;
if (!XGetWMNormalHints(display(), window(), &sizehint, &icccm_mask))
sizehint.flags = 0;
normal_hint_flags = sizehint.flags;
if (sizehint.flags & PMinSize) {
m_size_hints.min_width = sizehint.min_width;
m_size_hints.min_height = sizehint.min_height;
} else
m_size_hints.min_width = m_size_hints.min_height = 1;
if (sizehint.flags & PBaseSize) {
m_size_hints.base_width = sizehint.base_width;
m_size_hints.base_height = sizehint.base_height;
if (!(sizehint.flags & PMinSize)) {
m_size_hints.min_width = m_size_hints.base_width;
m_size_hints.min_height = m_size_hints.base_height;
}
} else
m_size_hints.base_width = m_size_hints.base_height = 0;
if (sizehint.flags & PMaxSize) {
m_size_hints.max_width = sizehint.max_width;
m_size_hints.max_height = sizehint.max_height;
} else {
m_size_hints.max_width = 0; // unbounded
m_size_hints.max_height = 0;
}
if (sizehint.flags & PResizeInc) {
m_size_hints.width_inc = sizehint.width_inc;
m_size_hints.height_inc = sizehint.height_inc;
} else
m_size_hints.width_inc = m_size_hints.height_inc = 1;
if (sizehint.flags & PAspect) {
m_size_hints.min_aspect_x = sizehint.min_aspect.x;
m_size_hints.min_aspect_y = sizehint.min_aspect.y;
m_size_hints.max_aspect_x = sizehint.max_aspect.x;
m_size_hints.max_aspect_y = sizehint.max_aspect.y;
} else
m_size_hints.min_aspect_x = m_size_hints.min_aspect_y =
m_size_hints.max_aspect_x = m_size_hints.max_aspect_y = 0;
if (sizehint.flags & PWinGravity)
m_win_gravity = sizehint.win_gravity;
else
m_win_gravity = NorthWestGravity;
} else {
normal_hint_flags = sizehint.flags;
if (sizehint.flags & PMinSize) {
m_size_hints.min_width = sizehint.min_width;
m_size_hints.min_height = sizehint.min_height;
if (!(sizehint.flags & PBaseSize)) {
m_size_hints.base_width = m_size_hints.min_width;
m_size_hints.base_height = m_size_hints.min_height;
}
} else {
m_size_hints.min_width = m_size_hints.min_height = 1;
m_size_hints.base_width = m_size_hints.base_height = 0;
}
// some sanity checks
if (m_size_hints.width_inc == 0)
m_size_hints.width_inc = 1;
if (m_size_hints.height_inc == 0)
m_size_hints.height_inc = 1;
if (sizehint.flags & PBaseSize) {
m_size_hints.base_width = sizehint.base_width;
m_size_hints.base_height = sizehint.base_height;
if (!(sizehint.flags & PMinSize)) {
m_size_hints.min_width = m_size_hints.base_width;
m_size_hints.min_height = m_size_hints.base_height;
}
} // default set in PMinSize
if (sizehint.flags & PMaxSize) {
m_size_hints.max_width = sizehint.max_width;
m_size_hints.max_height = sizehint.max_height;
} else {
m_size_hints.max_width = 0; // unbounded
m_size_hints.max_height = 0;
}
if (sizehint.flags & PResizeInc) {
m_size_hints.width_inc = sizehint.width_inc;
m_size_hints.height_inc = sizehint.height_inc;
} else
m_size_hints.width_inc = m_size_hints.height_inc = 1;
if (m_size_hints.width_inc == 0)
m_size_hints.width_inc = 1;
if (m_size_hints.height_inc == 0)
m_size_hints.height_inc = 1;
if (sizehint.flags & PAspect) {
m_size_hints.min_aspect_x = sizehint.min_aspect.x;
m_size_hints.min_aspect_y = sizehint.min_aspect.y;
m_size_hints.max_aspect_x = sizehint.max_aspect.x;
m_size_hints.max_aspect_y = sizehint.max_aspect.y;
} else
m_size_hints.min_aspect_x = m_size_hints.min_aspect_y =
m_size_hints.max_aspect_x = m_size_hints.max_aspect_y = 0;
if (sizehint.flags & PWinGravity)
m_win_gravity = sizehint.win_gravity;
else
m_win_gravity = NorthWestGravity;
}
if (m_size_hints.base_width > m_size_hints.min_width)
m_size_hints.min_width = m_size_hints.base_width;
if (m_size_hints.base_height > m_size_hints.min_height)
m_size_hints.min_height = m_size_hints.base_height;
}
Window WinClient::getGroupLeftWindow() const {