4a56f44bb9
- new imgur upload interface. - rework for a better code structure. It still needs another change separating the Controller from the code dedicated to export data to the system. - created the concept of "worker", component used to do some work based on a screenshot.
436 lines
16 KiB
C++
436 lines
16 KiB
C++
// Copyright 2017 Alejandro Sirgo Rica
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//
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// This file is part of Flameshot.
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//
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// Flameshot is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Flameshot is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Flameshot. If not, see <http://www.gnu.org/licenses/>.
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#include "buttonhandler.h"
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#include <QPoint>
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// ButtonHandler is a habdler for every active button. It makes easier to
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// manipulate the buttons as a unit.
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namespace {
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const int SEPARATION = 6;
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}
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ButtonHandler::ButtonHandler(const QVector<CaptureButton*> &v, QObject *parent) :
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QObject(parent), m_isPartiallyHidden(false), m_buttonsAreInside(false)
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{
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if (!v.isEmpty()) {
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m_buttonBaseSize = v[0]->buttonBaseSize();
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m_distance = m_buttonBaseSize + SEPARATION;
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m_vectorButtons = v;
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}
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}
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ButtonHandler::ButtonHandler(QObject *parent) :
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QObject(parent), m_isPartiallyHidden(false), m_buttonsAreInside(false)
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{
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}
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void ButtonHandler::hide() {
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for (CaptureButton *b: m_vectorButtons)
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b->hide();
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}
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void ButtonHandler::hideSectionUnderMouse(const QPoint &p) {
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if (m_topRegion.contains(p)) {
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m_isPartiallyHidden = true;
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for (CaptureButton *b: m_topButtons)
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b->hide();
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} else if (m_bottonRegion.contains(p)) {
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m_isPartiallyHidden = true;
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for (CaptureButton *b: m_bottonButtons)
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b->hide();
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} else if (m_rightRegion.contains(p)) {
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m_isPartiallyHidden = true;
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for (CaptureButton *b: m_rightButtons)
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b->hide();
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} else if (m_leftRegion.contains(p)) {
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m_isPartiallyHidden = true;
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for (CaptureButton *b: m_leftButtons)
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b->hide();
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} else if (m_insideRegion.contains(p)) {
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m_isPartiallyHidden = true;
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for (CaptureButton *b: m_insideButtons)
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b->hide();
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}
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}
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void ButtonHandler::show() {
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if (m_isPartiallyHidden) {
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m_isPartiallyHidden = false;
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for (CaptureButton *b: m_vectorButtons) {
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if (b->isHidden()) {
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b->animatedShow();
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}
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}
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} else {
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for (CaptureButton *b: m_vectorButtons)
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b->animatedShow();
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}
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}
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bool ButtonHandler::isVisible() const {
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bool ret = true;
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for (const CaptureButton *b: m_vectorButtons) {
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if (!b->isVisible()) {
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ret = false;
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break;
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}
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}
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return ret;
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}
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bool ButtonHandler::isPartiallyHidden() const {
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return m_isPartiallyHidden;
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}
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bool ButtonHandler::buttonsAreInside() const {
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return m_buttonsAreInside;
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}
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size_t ButtonHandler::size() const {
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return m_vectorButtons.size();
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}
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// updatePosition updates the position of the buttons arround the
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// selection area. Ignores the sides blocked by the end of the screen.
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// When the selection is too small it works on a virtual selection with
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// the original in the center.
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void ButtonHandler::updatePosition(const QRect &selection,
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const QRect &limits)
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{
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resetRegionTrack();
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const int vecLength = m_vectorButtons.size();
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if (vecLength == 0) {
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return;
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}
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// button dimmensions
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const int baseHeight = m_buttonBaseSize;
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const int baseWidth = m_buttonBaseSize;
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// copy of the selection area for internal modifications
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QRect baseArea = selection;
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// calculates the blocked sides (no more space for buttons)
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bool blockedRight =
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(limits.right() - baseArea.right() < SEPARATION*2 + baseWidth);
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bool blockedLeft =
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(baseArea.x() < baseWidth + SEPARATION*2);
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bool blockedBotton =
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(limits.bottom() - baseArea.bottom() < SEPARATION*2 + baseHeight);
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bool blockedTop =
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(baseArea.y() < baseHeight + SEPARATION*2);
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// detect if a side is smaller than a button in order to prevent collision
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// and redimension the base area the the base size of a single button per side
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if (baseArea.width() < baseWidth) {
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if (blockedRight && !blockedLeft) {
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baseArea.setX(baseArea.x() - (baseWidth-baseArea.width()));
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} else if (!blockedLeft && !blockedRight) {
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// when not close to the left side (because the rect grows to the right)
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baseArea.setX(baseArea.x() - (baseWidth-baseArea.width()) / 2);
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}
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baseArea.setWidth(baseWidth);
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}
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if (baseArea.height() < baseHeight) {
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if (blockedBotton && !blockedTop) {
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baseArea.setY(baseArea.y() - (baseHeight-baseArea.height()));
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} else if (!blockedTop && !blockedBotton) {
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// when not close to the top (because the rect grows to the bottom)
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baseArea.setY(baseArea.y() - (baseHeight-baseArea.height()) / 2);
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}
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baseArea.setHeight(baseHeight);
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}
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// indicates the actual button to be moved
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int elemIndicator = 0;
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while (elemIndicator < vecLength) {
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// update of blocked sides
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blockedRight = (limits.right() - baseArea.right() < SEPARATION * 2 + baseWidth);
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blockedLeft = (baseArea.x() < baseWidth + SEPARATION * 2);
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blockedBotton = (limits.bottom() - baseArea.bottom() < SEPARATION * 2 + baseHeight);
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blockedTop = (baseArea.y() < baseHeight + SEPARATION * 2);
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// helper booleans
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bool oneHorizontalBlocked = (!blockedRight && blockedLeft) ||
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(blockedRight && !blockedLeft);
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bool horizontalBlocked = (blockedRight && blockedLeft);
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bool allSidesBlocked = (blockedBotton && horizontalBlocked && blockedTop);
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// add them inside the area when there is no more space
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if (allSidesBlocked) {
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QVector<QPoint> positions;
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int buttonsPerRow = (baseArea.width() - SEPARATION) / (baseWidth + SEPARATION);
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int xPos = baseArea.left() + SEPARATION;
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int yPos = baseArea.bottom() - SEPARATION - baseHeight;
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positions << QPoint(xPos, yPos);
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for (; elemIndicator < vecLength; ++elemIndicator) {
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if (elemIndicator % buttonsPerRow == 0 && elemIndicator != 0) {
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xPos = baseArea.left() + SEPARATION;
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yPos -= (SEPARATION + baseHeight);
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}
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auto button = m_vectorButtons[elemIndicator];
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m_insideButtons << button;
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button->move(xPos, yPos);
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xPos += (SEPARATION + baseWidth);
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positions << QPoint(xPos, yPos);
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}
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addToRegion(positions, INSIDE);
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m_buttonsAreInside = true;
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break; // the while
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}
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// number of buttons per row column
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int buttonsPerRow = (baseArea.width() + SEPARATION) / (baseWidth + SEPARATION);
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int buttonsPerCol = (baseArea.height() + SEPARATION) / (baseHeight + SEPARATION);
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// buttons to be placed in the corners
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int extraButtons = vecLength - buttonsPerRow*2 - buttonsPerCol*2;
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int elemsAtCorners = extraButtons > 4 ? 4 : extraButtons;
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// add buttons at the botton of the seletion
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if (!blockedBotton) {
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int addCounter =
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(vecLength - elemIndicator < buttonsPerRow) ?
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vecLength - elemIndicator : buttonsPerRow;
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if (elemsAtCorners > 2) {
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int temp = elemsAtCorners - 2;
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if (oneHorizontalBlocked && temp > 1) {
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temp -= 1;
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}
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addCounter += temp;
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}
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QPoint center = QPoint(baseArea.center().x(),
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baseArea.bottom() + SEPARATION);
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if (addCounter > buttonsPerRow) {
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if (blockedLeft) {
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center.setX(center.x() + (baseWidth+SEPARATION)/2);
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} else if (blockedRight) {
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center.setX(center.x() - (baseWidth+SEPARATION)/2);
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}
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}
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// elemIndicator, elemsAtCorners
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QVector<QPoint> positions = horizontalPoints(center, addCounter, true);
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for (const QPoint &p: positions) {
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auto button = m_vectorButtons[elemIndicator];
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m_bottonButtons << button;
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button->move(p);
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++elemIndicator;
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}
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addToRegion(positions, BOTTON);
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}
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// add buttons at the right side of the seletion
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if (!blockedRight && elemIndicator < vecLength) {
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int addCounter =
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(vecLength - elemIndicator < buttonsPerCol) ?
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vecLength - elemIndicator : buttonsPerCol;
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QPoint center = QPoint(baseArea.right() + SEPARATION,
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baseArea.center().y());
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QVector<QPoint> positions = verticalPoints(center, addCounter, false);
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for (const QPoint &p: positions) {
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auto button = m_vectorButtons[elemIndicator];
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m_rightButtons << button;
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button->move(p);
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++elemIndicator;
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}
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addToRegion(positions, RIGHT);
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}
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// add buttons at the top of the seletion
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if (!blockedTop && elemIndicator < vecLength) {
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int addCounter =
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(vecLength - elemIndicator < buttonsPerRow) ?
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vecLength - elemIndicator : buttonsPerRow;
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if (elemsAtCorners > 1 && !horizontalBlocked && !oneHorizontalBlocked) {
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addCounter += 2;
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} else if ((elemsAtCorners == 1 &&
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(!horizontalBlocked || oneHorizontalBlocked)) ||
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(elemsAtCorners > 1 && oneHorizontalBlocked)) {
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addCounter += 1;
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}
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QPoint center = QPoint(baseArea.center().x(),
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baseArea.top() - (SEPARATION+baseHeight));
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if (addCounter == 1 + buttonsPerRow) {
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if (blockedLeft) {
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center.setX(center.x() + (baseWidth+SEPARATION)/2);
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} else if (blockedRight) {
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center.setX(center.x() - (baseWidth+SEPARATION)/2);
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}
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}
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QVector<QPoint> positions = horizontalPoints(center, addCounter, false);
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for (const QPoint &p: positions) {
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auto button = m_vectorButtons[elemIndicator];
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m_topButtons << button;
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button->move(p);
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++elemIndicator;
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}
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addToRegion(positions, TOP);
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}
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// add buttons at the left side of the seletion
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if (!blockedLeft && elemIndicator < vecLength) {
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int addCounter =
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(vecLength - elemIndicator < buttonsPerCol) ?
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vecLength - elemIndicator : buttonsPerCol;
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if (vecLength - elemIndicator < buttonsPerCol) {
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addCounter = vecLength - elemIndicator;
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}
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QPoint center = QPoint(baseArea.left() - (SEPARATION + baseWidth),
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baseArea.center().y());
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QVector<QPoint> positions = verticalPoints(center, addCounter, true);
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for (const QPoint &p: positions) {
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auto button = m_vectorButtons[elemIndicator];
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m_leftButtons << button;
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button->move(p);
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++elemIndicator;
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}
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addToRegion(positions, LEFT);
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}
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// if there are elements for the next cycle, increase the size of the base area
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if (elemIndicator < vecLength &&
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!(allSidesBlocked))
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{
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if (blockedRight && !blockedLeft) {
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baseArea.setX(baseArea.x() - (baseWidth + SEPARATION));
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} else if (!blockedRight && !blockedLeft) {
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baseArea.setX(baseArea.x() - (baseWidth + SEPARATION));
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baseArea.setWidth(baseArea.width() + (baseWidth + SEPARATION));
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} else {
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baseArea.setWidth(baseArea.width() + (baseWidth + SEPARATION));
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}
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if (blockedBotton && !blockedTop) {
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baseArea.setY(baseArea.y() - (baseHeight + SEPARATION));
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} else if (!blockedTop && !blockedBotton) {
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baseArea.setY(baseArea.y() - (baseHeight + SEPARATION));
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baseArea.setHeight(baseArea.height() + (baseHeight + SEPARATION));
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} else {
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baseArea.setHeight(baseArea.height() + (baseHeight + SEPARATION));
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}
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}
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}
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}
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// getHPoints is an auxiliar method for the button position computation.
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// starts from a known center and keeps adding elements horizontally
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// and returns the computed positions.
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QVector<QPoint> ButtonHandler::horizontalPoints(
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const QPoint ¢er, const int elements, const bool leftToRight) const
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{
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QVector<QPoint> res;
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// distance from the center to start adding buttons
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int shift = 0;
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if (elements % 2 == 0) {
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shift = m_distance * (elements / 2) - (SEPARATION / 2);
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} else {
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shift = m_distance * ((elements-1) / 2) + m_buttonBaseSize / 2;
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}
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if (!leftToRight) { shift -= m_buttonBaseSize; }
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int x = leftToRight ? center.x() - shift :
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center.x() + shift;
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QPoint i(x, center.y());
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while (elements > res.length()) {
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res.append(i);
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leftToRight ? i.setX(i.x() + m_distance) :
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i.setX(i.x() - m_distance);
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}
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return res;
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}
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// getHPoints is an auxiliar method for the button position computation.
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// starts from a known center and keeps adding elements vertically
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// and returns the computed positions.
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QVector<QPoint> ButtonHandler::verticalPoints(
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const QPoint ¢er, const int elements,const bool upToDown) const
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{
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QVector<QPoint> res;
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// distance from the center to start adding buttons
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int shift = 0;
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if (elements % 2 == 0) {
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shift = m_distance * (elements / 2) - (SEPARATION / 2);
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} else {
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shift = m_distance * ((elements-1) / 2) + m_buttonBaseSize / 2;
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}
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if (!upToDown) { shift -= m_buttonBaseSize; }
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int y = upToDown ? center.y() - shift :
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center.y() + shift;
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QPoint i(center.x(), y);
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while (elements > res.length()) {
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res.append(i);
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upToDown ? i.setY(i.y() + m_distance) :
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i.setY(i.y() - m_distance);
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}
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return res;
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}
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void ButtonHandler::addToRegion(const QVector<QPoint> &points, const side side) {
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if (points.isEmpty())
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return;
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QPoint first(points.first());
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QPoint last(points.last());
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bool firstIsTopLeft = (first.x() <= last.x() && first.y() <= last.y());
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QPoint topLeft = firstIsTopLeft ? first : last;
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QPoint bottonRight = firstIsTopLeft ? last : first;
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topLeft += QPoint(-SEPARATION, -SEPARATION);
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bottonRight += QPoint(m_distance, m_distance);
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switch (side) {
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case LEFT:
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m_leftRegion += QRegion(QRect(topLeft, bottonRight).normalized());
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break;
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case RIGHT:
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m_rightRegion += QRegion(QRect(topLeft, bottonRight).normalized());
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break;
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case TOP:
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m_topRegion += QRegion(QRect(topLeft, bottonRight).normalized());
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break;
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case BOTTON:
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m_bottonRegion += QRegion(QRect(topLeft, bottonRight).normalized());
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break;
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case INSIDE:
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m_insideRegion += QRegion(QRect(topLeft, bottonRight).normalized());
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break;
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default:
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break;
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}
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}
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void ButtonHandler::resetRegionTrack() {
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m_buttonsAreInside = false;
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m_topButtons.clear();
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m_bottonButtons.clear();
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m_leftButtons.clear();
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m_rightButtons.clear();
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m_topRegion = QRegion();
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m_bottonRegion = QRegion();
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m_leftRegion = QRegion();
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m_rightRegion = QRegion();
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m_insideRegion = QRegion();
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}
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// setButtons redefines the buttons of the button handler
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void ButtonHandler::setButtons(const QVector<CaptureButton *> v) {
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for (CaptureButton *b: m_vectorButtons)
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delete(b);
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m_vectorButtons = v;
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if (!v.isEmpty()) {
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m_buttonBaseSize = v[0]->buttonBaseSize();
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m_distance = m_buttonBaseSize + SEPARATION;
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}
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}
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bool ButtonHandler::contains(const QPoint &p) const {
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return m_leftRegion.contains(p) || m_rightRegion.contains(p)
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|| m_topRegion.contains(p) || m_bottonRegion.contains(p)
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|| m_insideRegion.contains(p);
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}
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