Magiclamp: fix integer overflow, cpu waste
BUG: 284738
This commit is contained in:
Thomas Lübking
parent
ac3bc1fcef
commit
6355a217c2
1 changed files with 110 additions and 96 deletions
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@ -24,6 +24,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include <kwinconfig.h>
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#include <kconfiggroup.h>
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#include <QtCore/QTimeLine>
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#include <QtDebug>
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namespace KWin
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{
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@ -114,7 +115,6 @@ void MagicLampEffect::paintWindow(EffectWindow* w, int mask, QRegion region, Win
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QRect geo = w->geometry();
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QRect icon = w->iconGeometry();
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QRect area = effects->clientArea(ScreenArea, w);
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IconPosition position = Top;
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// If there's no icon geometry, minimize to the center of the screen
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if (!icon.isValid()) {
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@ -205,108 +205,122 @@ void MagicLampEffect::paintWindow(EffectWindow* w, int mask, QRegion region, Win
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}
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}
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#define SANITIZE_PROGRESS if (p_progress[0] < 0)\
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p_progress[0] = -p_progress[0];\
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if (p_progress[1] < 0)\
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p_progress[1] = -p_progress[1]
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#define SET_QUADS(_SET_A_, _A_, _DA_, _SET_B_, _B_, _O0_, _O1_, _O2_, _O3_) quad[0]._SET_A_((icon._A_() + icon._DA_()*(quad[0]._A_() / geo._DA_()) - (quad[0]._A_() + geo._A_()))*p_progress[_O0_] + quad[0]._A_());\
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quad[1]._SET_A_((icon._A_() + icon._DA_()*(quad[1]._A_() / geo._DA_()) - (quad[1]._A_() + geo._A_()))*p_progress[_O1_] + quad[1]._A_());\
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quad[2]._SET_A_((icon._A_() + icon._DA_()*(quad[2]._A_() / geo._DA_()) - (quad[2]._A_() + geo._A_()))*p_progress[_O2_] + quad[2]._A_());\
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quad[3]._SET_A_((icon._A_() + icon._DA_()*(quad[3]._A_() / geo._DA_()) - (quad[3]._A_() + geo._A_()))*p_progress[_O3_] + quad[3]._A_());\
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\
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quad[0]._SET_B_(quad[0]._B_() + offset[_O0_]);\
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quad[1]._SET_B_(quad[1]._B_() + offset[_O1_]);\
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quad[2]._SET_B_(quad[2]._B_() + offset[_O2_]);\
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quad[3]._SET_B_(quad[3]._B_() + offset[_O3_])
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WindowQuadList newQuads;
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foreach (WindowQuad quad, data.quads) { // krazy:exclude=foreach
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if (position == Top || position == Bottom) {
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// quadFactor defines how fast a quad is vertically moved: y coordinates near to window top are slowed down
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// it is used as quadFactor^3/windowHeight^3
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// quadFactor is the y position of the quad but is changed towards becomming the window height
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// by that the factor becomes 1 and has no influence any more
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float quadFactor;
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// how far has a quad to be moved? Distance between icon and window multiplied by the progress and by the quadFactor
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float yOffsetTop;
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float yOffsetBottom;
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// top and bottom progress is the factor which defines how far the x values have to be changed
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// factor is the current moved y value diveded by the distance between icon and window
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float topProgress;
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float bottomProgress;
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if (position == Bottom) {
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float quadFactor; // defines how fast a quad is vertically moved: y coordinates near to window top are slowed down
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// it is used as quadFactor^3/windowHeight^3
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// quadFactor is the y position of the quad but is changed towards becomming the window height
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// by that the factor becomes 1 and has no influence any more
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float offset[2] = {0,0}; // how far has a quad to be moved? Distance between icon and window multiplied by the progress and by the quadFactor
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float p_progress[2] = {0,0}; // the factor which defines how far the x values have to be changed
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// factor is the current moved y value diveded by the distance between icon and window
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WindowQuad lastQuad(WindowQuadError);
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lastQuad[0].setX(-1);
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lastQuad[0].setY(-1);
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lastQuad[1].setX(-1);
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lastQuad[1].setY(-1);
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lastQuad[2].setX(-1);
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lastQuad[2].setY(-1);
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if (position == Bottom) {
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float height_cube = float(geo.height()) * float(geo.height()) * float(geo.height());
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foreach (WindowQuad quad, data.quads) { // krazy:exclude=foreach
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if (quad[0].y() != lastQuad[0].y() || quad[2].y() != lastQuad[2].y()) {
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quadFactor = quad[0].y() + (geo.height() - quad[0].y()) * progress;
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yOffsetTop = (icon.y() + quad[0].y() - geo.y()) * progress *
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((quadFactor * quadFactor * quadFactor) / (geo.height() * geo.height() * geo.height()));
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offset[0] = (icon.y() + quad[0].y() - geo.y()) * progress * ((quadFactor * quadFactor * quadFactor) / height_cube);
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quadFactor = quad[2].y() + (geo.height() - quad[2].y()) * progress;
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yOffsetBottom = (icon.y() + quad[2].y() - geo.y()) * progress *
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((quadFactor * quadFactor * quadFactor) / (geo.height() * geo.height() * geo.height()));
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topProgress = qMin(yOffsetTop / (icon.y() + icon.height() - geo.y() - (float)(quad[0].y() / geo.height() * geo.height())), 1.0f);
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bottomProgress = qMin(yOffsetBottom / (icon.y() + icon.height() - geo.y() - (float)(quad[2].y() / geo.height() * geo.height())), 1.0f);
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} else {
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quadFactor = geo.height() - quad[0].y() + (quad[0].y()) * progress;
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yOffsetTop = (geo.y() - icon.height() + geo.height() + quad[0].y() - icon.y()) * progress *
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((quadFactor * quadFactor * quadFactor) / (geo.height() * geo.height() * geo.height()));
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quadFactor = geo.height() - quad[2].y() + (quad[2].y()) * progress;
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yOffsetBottom = (geo.y() - icon.height() + geo.height() + quad[2].y() - icon.y()) * progress *
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((quadFactor * quadFactor * quadFactor) / (geo.height() * geo.height() * geo.height()));
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topProgress = qMin(yOffsetTop / (geo.y() - icon.height() + geo.height() - icon.y() -
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(float)((geo.height() - quad[0].y()) / geo.height() * geo.height())), 1.0f);
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bottomProgress = qMin(yOffsetBottom / (geo.y() - icon.height() + geo.height() - icon.y() -
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(float)((geo.height() - quad[2].y()) / geo.height() * geo.height())), 1.0f);
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}
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if (position == Top) {
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yOffsetTop *= -1;
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yOffsetBottom *= -1;
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}
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if (topProgress < 0)
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topProgress *= -1;
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if (bottomProgress < 0)
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bottomProgress *= -1;
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offset[1] = (icon.y() + quad[2].y() - geo.y()) * progress * ((quadFactor * quadFactor * quadFactor) / height_cube);
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p_progress[1] = qMin(offset[1] / (icon.y() + icon.height() - geo.y() - float(quad[2].y())), 1.0f);
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p_progress[0] = qMin(offset[0] / (icon.y() + icon.height() - geo.y() - float(quad[0].y())), 1.0f);
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} else
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lastQuad = quad;
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SANITIZE_PROGRESS;
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// x values are moved towards the center of the icon
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quad[0].setX((icon.x() + icon.width()*(quad[0].x() / geo.width()) - (quad[0].x() + geo.x()))*topProgress + quad[0].x());
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quad[1].setX((icon.x() + icon.width()*(quad[1].x() / geo.width()) - (quad[1].x() + geo.x()))*topProgress + quad[1].x());
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quad[2].setX((icon.x() + icon.width()*(quad[2].x() / geo.width()) - (quad[2].x() + geo.x()))*bottomProgress + quad[2].x());
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quad[3].setX((icon.x() + icon.width()*(quad[3].x() / geo.width()) - (quad[3].x() + geo.x()))*bottomProgress + quad[3].x());
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SET_QUADS(setX, x, width, setY, y, 0,0,1,1);
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quad[0].setY(quad[0].y() + yOffsetTop);
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quad[1].setY(quad[1].y() + yOffsetTop);
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quad[2].setY(quad[2].y() + yOffsetBottom);
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quad[3].setY(quad[3].y() + yOffsetBottom);
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} else {
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float quadFactor;
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float xOffsetLeft;
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float xOffsetRight;
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float leftProgress;
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float rightProgress;
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if (position == Right) {
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quadFactor = quad[0].x() + (geo.width() - quad[0].x()) * progress;
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xOffsetLeft = (icon.x() + quad[0].x() - geo.x()) * progress *
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((quadFactor * quadFactor * quadFactor) / (geo.width() * geo.width() * geo.width()));
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quadFactor = quad[1].x() + (geo.width() - quad[1].x()) * progress;
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xOffsetRight = (icon.x() + quad[1].x() - geo.x()) * progress *
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((quadFactor * quadFactor * quadFactor) / (geo.width() * geo.width() * geo.width()));
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leftProgress = qMin(xOffsetLeft / (icon.x() + icon.width() - geo.x() - (float)(quad[0].x() / geo.width() * geo.width())), 1.0f);
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rightProgress = qMin(xOffsetRight / (icon.x() + icon.width() - geo.x() - (float)(quad[1].x() / geo.width() * geo.width())), 1.0f);
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} else {
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quadFactor = geo.width() - quad[0].x() + (quad[0].x()) * progress;
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xOffsetLeft = (geo.x() - icon.width() + geo.width() + quad[0].x() - icon.x()) * progress *
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((quadFactor * quadFactor * quadFactor) / (geo.width() * geo.width() * geo.width()));
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quadFactor = geo.width() - quad[1].x() + (quad[1].x()) * progress;
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xOffsetRight = (geo.x() - icon.width() + geo.width() + quad[1].x() - icon.x()) * progress *
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((quadFactor * quadFactor * quadFactor) / (geo.width() * geo.width() * geo.width()));
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leftProgress = qMin(xOffsetLeft / (geo.x() - icon.width() + geo.width() - icon.x() -
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(float)((geo.width() - quad[0].x()) / geo.width() * geo.width())), 1.0f);
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rightProgress = qMin(xOffsetRight / (geo.x() - icon.width() + geo.width() - icon.x() -
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(float)((geo.width() - quad[1].x()) / geo.width() * geo.width())), 1.0f);
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}
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if (position == Left) {
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xOffsetLeft *= -1;
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xOffsetRight *= -1;
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}
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if (leftProgress < 0)
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leftProgress *= -1;
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if (rightProgress < 0)
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rightProgress *= -1;
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quad[0].setY((icon.y() + icon.height()*(quad[0].y() / geo.height()) - (quad[0].y() + geo.y()))*leftProgress + quad[0].y());
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quad[1].setY((icon.y() + icon.height()*(quad[1].y() / geo.height()) - (quad[1].y() + geo.y()))*rightProgress + quad[1].y());
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quad[2].setY((icon.y() + icon.height()*(quad[2].y() / geo.height()) - (quad[2].y() + geo.y()))*rightProgress + quad[2].y());
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quad[3].setY((icon.y() + icon.height()*(quad[3].y() / geo.height()) - (quad[3].y() + geo.y()))*leftProgress + quad[3].y());
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quad[0].setX(quad[0].x() + xOffsetLeft);
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quad[1].setX(quad[1].x() + xOffsetRight);
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quad[2].setX(quad[2].x() + xOffsetRight);
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quad[3].setX(quad[3].x() + xOffsetLeft);
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newQuads.append(quad);
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}
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} else if (position == Top) {
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float height_cube = float(geo.height()) * float(geo.height()) * float(geo.height());
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foreach (WindowQuad quad, data.quads) { // krazy:exclude=foreach
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if (quad[0].y() != lastQuad[0].y() || quad[2].y() != lastQuad[2].y()) {
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quadFactor = geo.height() - quad[0].y() + (quad[0].y()) * progress;
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offset[0] = (geo.y() - icon.height() + geo.height() + quad[0].y() - icon.y()) * progress * ((quadFactor * quadFactor * quadFactor) / height_cube);
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quadFactor = geo.height() - quad[2].y() + (quad[2].y()) * progress;
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offset[1] = (geo.y() - icon.height() + geo.height() + quad[2].y() - icon.y()) * progress * ((quadFactor * quadFactor * quadFactor) / height_cube);
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p_progress[0] = qMin(offset[0] / (geo.y() - icon.height() + geo.height() - icon.y() - float(geo.height() - quad[0].y())), 1.0f);
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p_progress[1] = qMin(offset[1] / (geo.y() - icon.height() + geo.height() - icon.y() - float(geo.height() - quad[2].y())), 1.0f);
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} else
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lastQuad = quad;
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offset[0] = -offset[0];
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offset[1] = -offset[1];
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SANITIZE_PROGRESS;
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// x values are moved towards the center of the icon
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SET_QUADS(setX, x, width, setY, y, 0,0,1,1);
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newQuads.append(quad);
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}
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} else if (position == Left) {
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float width_cube = float(geo.width()) * float(geo.width()) * float(geo.width());
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foreach (WindowQuad quad, data.quads) { // krazy:exclude=foreach
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if (quad[0].x() != lastQuad[0].x() || quad[1].x() != lastQuad[1].x()) {
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quadFactor = geo.width() - quad[0].x() + (quad[0].x()) * progress;
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offset[0] = (geo.x() - icon.width() + geo.width() + quad[0].x() - icon.x()) * progress * ((quadFactor * quadFactor * quadFactor) / width_cube);
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quadFactor = geo.width() - quad[1].x() + (quad[1].x()) * progress;
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offset[1] = (geo.x() - icon.width() + geo.width() + quad[1].x() - icon.x()) * progress * ((quadFactor * quadFactor * quadFactor) / width_cube);
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p_progress[0] = qMin(offset[0] / (geo.x() - icon.width() + geo.width() - icon.x() - float(geo.width() - quad[0].x())), 1.0f);
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p_progress[1] = qMin(offset[1] / (geo.x() - icon.width() + geo.width() - icon.x() - float(geo.width() - quad[1].x())), 1.0f);
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} else
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lastQuad = quad;
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offset[0] = -offset[0];
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offset[1] = -offset[1];
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SANITIZE_PROGRESS;
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// y values are moved towards the center of the icon
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SET_QUADS(setY, y, height, setX, x, 0,1,1,0);
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newQuads.append(quad);
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}
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} else if (position == Right) {
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float width_cube = float(geo.width()) * float(geo.width()) * float(geo.width());
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foreach (WindowQuad quad, data.quads) { // krazy:exclude=foreach
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if (quad[0].x() != lastQuad[0].x() || quad[1].x() != lastQuad[1].x()) {
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quadFactor = quad[0].x() + (geo.width() - quad[0].x()) * progress;
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offset[0] = (icon.x() + quad[0].x() - geo.x()) * progress * ((quadFactor * quadFactor * quadFactor) / width_cube);
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quadFactor = quad[1].x() + (geo.width() - quad[1].x()) * progress;
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offset[1] = (icon.x() + quad[1].x() - geo.x()) * progress * ((quadFactor * quadFactor * quadFactor) / width_cube);
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p_progress[0] = qMin(offset[0] / (icon.x() + icon.width() - geo.x() - float(quad[0].x())), 1.0f);
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p_progress[1] = qMin(offset[1] / (icon.x() + icon.width() - geo.x() - float(quad[1].x())), 1.0f);
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} else
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lastQuad = quad;
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SANITIZE_PROGRESS;
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// y values are moved towards the center of the icon
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SET_QUADS(setY, y, height, setX, x, 0,1,1,0);
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newQuads.append(quad);
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}
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newQuads.append(quad);
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}
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data.quads = newQuads;
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}
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