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accurate math on timeline, near-accurate on viewer

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This commit is contained in:
itsmattkc
2018-12-25 21:12:25 +11:00
parent edf6f00271
commit 5aca8b881d
6 changed files with 38 additions and 19 deletions
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ui/resizablescrollbar.cpp
+25 -7
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@@ -4,6 +4,8 @@
#include <QStyle>
#include <QStyleOptionSlider>
#include "debug.h"
#define RESIZE_HANDLE_SIZE 10
ResizableScrollBar::ResizableScrollBar(QWidget *parent) :
@@ -20,6 +22,12 @@ bool ResizableScrollBar::is_resizing() {
void ResizableScrollBar::mousePressEvent(QMouseEvent *e) {
if (resize_init) {
QStyleOptionSlider opt;
initStyleOption(&opt);
QRect sr = style()->subControlRect(QStyle::CC_ScrollBar, &opt,
QStyle::SC_ScrollBarSlider, this);
resize_proc = true;
resize_start = e->pos().x();
} else {
@@ -33,16 +41,26 @@ void ResizableScrollBar::mouseMoveEvent(QMouseEvent *e) {
QRect sr = style()->subControlRect(QStyle::CC_ScrollBar, &opt,
QStyle::SC_ScrollBarSlider, this);
QRect gr = style()->subControlRect(QStyle::CC_ScrollBar, &opt,
QStyle::SC_ScrollBarGroove, this);
if (resize_proc) {
int diff = e->pos().x() - resize_start;
if (resize_top) {
setValue(value() + diff);
diff = -diff;
int diff = (e->pos().x() - resize_start);
if (resize_top) diff = -diff;
double scale = double(sr.width())/double(sr.width()+diff);
if (!qIsInf(scale) && !qIsNull(scale)) {
emit resize_move(scale);
resize_start = e->pos().x();
if (resize_top) {
int slider_min = gr.x();
int slider_max = gr.right() - (sr.width()+diff) + 1;
int val = QStyle::sliderValueFromPosition(minimum(), maximum(), e->pos().x() - slider_min, slider_max - slider_min, opt.upsideDown);
setValue(val);
} else {
setValue(qRound(value() * scale));
}
}
int w = sr.width() + diff;
emit resized_scroll(double(sr.width())/double(w));
resize_start = e->pos().x();
} else {
bool new_resize_init = false;