xdg-shell: fixup positioner behavior with slide and resize

if sliding and resizing, include the slide in the resize to avoid off-screen surfaces.

fixes #6150
This commit is contained in:
vaxerski 2024-05-21 14:50:33 +02:00
parent f8857e6072
commit baef55da1d

View File

@ -550,6 +550,14 @@ CBox CXDGPositionerRules::getPosition(const CBox& constraint, const Vector2D& pa
return test.translate(-parentCoord - constraint.pos());
}
// if flips fail, we will slide and remember.
// if the positioner is allowed to resize, then resize the slid thing.
CBox test = predictedBox;
// for slide and resize, defines the padding around the edge for the positioned
// surface.
constexpr int EDGE_PADDING = 4;
if (state.constraintAdjustment & (XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_X | XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_Y)) {
// attempt to slide
const bool slideX = state.constraintAdjustment & XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_X;
@ -563,17 +571,15 @@ CBox CXDGPositionerRules::getPosition(const CBox& constraint, const Vector2D& pa
const bool rightEdgeOut = predictedBox.x + predictedBox.w > constraint.x + constraint.w;
const bool bottomEdgeOut = predictedBox.y + predictedBox.h > constraint.y + constraint.h;
CBox test = predictedBox;
// TODO: this isn't truly conformant.
if (leftEdgeOut && slideX)
test.x = constraint.x;
test.x = constraint.x + EDGE_PADDING;
if (rightEdgeOut && slideX)
test.x = constraint.x + constraint.w - predictedBox.w;
test.x = constraint.x + constraint.w - predictedBox.w - EDGE_PADDING;
if (topEdgeOut && slideY)
test.y = constraint.y;
test.y = constraint.y + EDGE_PADDING;
if (bottomEdgeOut && slideY)
test.y = constraint.y + constraint.h - predictedBox.y;
test.y = constraint.y + constraint.h - predictedBox.y - EDGE_PADDING;
success = test.copy().expand(-1).inside(constraint);
@ -590,21 +596,19 @@ CBox CXDGPositionerRules::getPosition(const CBox& constraint, const Vector2D& pa
const bool rightEdgeOut = predictedBox.x + predictedBox.w > constraint.x + constraint.w;
const bool bottomEdgeOut = predictedBox.y + predictedBox.h > constraint.y + constraint.h;
CBox test = predictedBox;
// TODO: this isn't truly conformant.
if (leftEdgeOut && resizeX) {
test.w = test.x + test.w - constraint.x;
test.x = constraint.x;
test.w = test.x + test.w - constraint.x - EDGE_PADDING;
test.x = constraint.x + EDGE_PADDING;
}
if (rightEdgeOut && resizeX)
test.w = -(constraint.w + constraint.x - test.w - test.x);
test.w = -(constraint.w + constraint.x - test.w - test.x + EDGE_PADDING);
if (topEdgeOut && resizeY) {
test.h = test.y + test.h - constraint.y;
test.y = constraint.y;
test.h = test.y + test.h - constraint.y - EDGE_PADDING;
test.y = constraint.y + EDGE_PADDING;
}
if (bottomEdgeOut && resizeY)
test.h = -(constraint.h + constraint.y - test.h - test.y);
test.h = -(constraint.h + constraint.y - test.h - test.y + EDGE_PADDING);
success = test.copy().expand(-1).inside(constraint);
@ -614,7 +618,7 @@ CBox CXDGPositionerRules::getPosition(const CBox& constraint, const Vector2D& pa
LOGM(WARN, "Compositor/client bug: xdg_positioner couldn't find a place");
return predictedBox.translate(-parentCoord - constraint.pos());
return test.translate(-parentCoord - constraint.pos());
}
CXDGWMBase::CXDGWMBase(SP<CXdgWmBase> resource_) : resource(resource_) {