Mike-Solar
c0dcd33de0
Move the pure-header utilities shared by app/ and engine/ out of engine/common/ into a new shared/include/oakutil/ layer (define, lerp, decibel, digit, range, crashpadutils, autoscroll, qtutils, filefunctions declarations, and a trimmed xmlutils exposing a CancelAtom-free void* overload). engine/common/ keeps forwarding headers so internal include paths are unchanged; app/ now includes oakutil/* directly. engine/node/project.h gains an explicit NodeGroup forward declaration previously obtained transitively through the old xmlutils.h.
160 lines
3.5 KiB
C++
160 lines
3.5 KiB
C++
/***
|
|
|
|
Olive - Non-Linear Video Editor
|
|
Copyright (C) 2022 Olive Team
|
|
Modifications Copyright (C) 2025 mikesolar
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
***/
|
|
|
|
#include "resizablescrollbar.h"
|
|
|
|
#include <QDebug>
|
|
#include <QMouseEvent>
|
|
#include <QStyle>
|
|
#include <QStyleOptionSlider>
|
|
|
|
#include "oakutil/range.h"
|
|
|
|
namespace olive
|
|
{
|
|
|
|
const int ResizableScrollBar::k_handle_width = 10;
|
|
|
|
ResizableScrollBar::ResizableScrollBar(QWidget *parent)
|
|
: QScrollBar(parent)
|
|
{
|
|
init();
|
|
}
|
|
|
|
ResizableScrollBar::ResizableScrollBar(Qt::Orientation orientation,
|
|
QWidget *parent)
|
|
: QScrollBar(orientation, parent)
|
|
{
|
|
init();
|
|
}
|
|
|
|
void ResizableScrollBar::mousePressEvent(QMouseEvent *event)
|
|
{
|
|
if (mouse_handle_state_ == k_not_in_handle) {
|
|
QScrollBar::mousePressEvent(event);
|
|
} else {
|
|
dragging_ = true;
|
|
|
|
drag_start_point_ = get_active_mouse_pos(event);
|
|
|
|
emit resize_began(get_active_bar_size(),
|
|
(mouse_handle_state_ == k_in_top_handle));
|
|
}
|
|
}
|
|
|
|
void ResizableScrollBar::mouseMoveEvent(QMouseEvent *event)
|
|
{
|
|
QRect sr = get_scroll_bar_rect();
|
|
|
|
if (dragging_) {
|
|
// Determine how much the cursor has moved
|
|
int mouse_movement = get_active_mouse_pos(event) - drag_start_point_;
|
|
|
|
emit resize_moved(mouse_movement);
|
|
|
|
} else {
|
|
int mouse_pos, top, bottom;
|
|
Qt::CursorShape target_cursor;
|
|
mouse_pos = get_active_mouse_pos(event);
|
|
|
|
if (orientation() == Qt::Horizontal) {
|
|
top = sr.left();
|
|
bottom = sr.right();
|
|
target_cursor = Qt::SizeHorCursor;
|
|
} else {
|
|
top = sr.top();
|
|
bottom = sr.bottom();
|
|
target_cursor = Qt::SizeVerCursor;
|
|
}
|
|
|
|
if (in_range(mouse_pos, top, k_handle_width)) {
|
|
mouse_handle_state_ = k_in_top_handle;
|
|
} else if (in_range(mouse_pos, bottom, k_handle_width)) {
|
|
mouse_handle_state_ = k_in_bottom_handle;
|
|
} else {
|
|
mouse_handle_state_ = k_not_in_handle;
|
|
}
|
|
|
|
if (mouse_handle_state_ == k_not_in_handle) {
|
|
unsetCursor();
|
|
} else {
|
|
setCursor(target_cursor);
|
|
}
|
|
|
|
QScrollBar::mouseMoveEvent(event);
|
|
}
|
|
}
|
|
|
|
void ResizableScrollBar::mouseReleaseEvent(QMouseEvent *event)
|
|
{
|
|
if (dragging_) {
|
|
dragging_ = false;
|
|
|
|
emit resize_ended();
|
|
} else {
|
|
QScrollBar::mouseReleaseEvent(event);
|
|
}
|
|
}
|
|
|
|
QRect ResizableScrollBar::get_scroll_bar_rect()
|
|
{
|
|
// Initialize "style option". I don't know what this does, I just ripped it straight from
|
|
// Qt source code
|
|
QStyleOptionSlider opt;
|
|
initStyleOption(&opt);
|
|
|
|
// Determine rect of slider bar
|
|
return style()->subControlRect(QStyle::CC_ScrollBar, &opt,
|
|
QStyle::SC_ScrollBarSlider, this);
|
|
}
|
|
|
|
void ResizableScrollBar::init()
|
|
{
|
|
setSingleStep(20);
|
|
setMaximum(0);
|
|
setMouseTracking(true);
|
|
|
|
mouse_handle_state_ = k_not_in_handle;
|
|
dragging_ = false;
|
|
}
|
|
|
|
int ResizableScrollBar::get_active_mouse_pos(QMouseEvent *event)
|
|
{
|
|
if (orientation() == Qt::Horizontal) {
|
|
return event->pos().x();
|
|
} else {
|
|
return event->pos().y();
|
|
}
|
|
}
|
|
|
|
int ResizableScrollBar::get_active_bar_size()
|
|
{
|
|
QRect sr = get_scroll_bar_rect();
|
|
|
|
if (orientation() == Qt::Horizontal) {
|
|
return sr.width();
|
|
} else {
|
|
return sr.height();
|
|
}
|
|
}
|
|
|
|
}
|