Mercurial > octave
view libgui/src/gui-utils.cc @ 31601:132547cc1ab2 stable
don't return invalid settings pointer from resource manager (bug #63437)
* resource-manager.cc (resource_manager::get_settings):
Display message box and exit if m_settings is nullptr.
(resource_manager::get_settings): Likewise, for m_default_settings.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Thu, 01 Dec 2022 15:00:07 -0500 |
parents | e2c8c852399e |
children | c6d54dd31a7e |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2000-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave 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. // // Octave 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 Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <QApplication> #include <QRect> #include <QScreen> #include "gui-utils.h" namespace octave { OCTGUI_API QColor interpolate_color (const QColor& col1, const QColor& col2, double fs, double fv) { qreal h1, s1, v1, h2, s2, v2; col1.getHsvF (&h1, &s1, &v1); col2.getHsvF (&h2, &s2, &v2); return QColor::fromHsvF (h1, s1*fs, v1 + fv*(v2 - v1)); } OCTGUI_API void get_screen_geometry (int& width, int& height) { QRect geom = QGuiApplication::primaryScreen ()->availableGeometry (); width = geom.width (); height = geom.height (); } OCTGUI_API void adjust_to_screen (QRect& actual_geometry, const QRect& default_geometry) { // Get the screen that holds the largest part of the given actual geometry const QScreen *actual_screen = nullptr; // no screen found yet QRect actual_screen_geom = QRect (); // geometry of found screen int intersected_area_max = 0; // max. intersected area const int area_actual_geometry = actual_geometry.width () * actual_geometry.height (); QRect intersection; foreach (const QScreen *screen, QGuiApplication::screens()) { QRect screen_geom = screen->availableGeometry (); intersection = screen_geom.intersected (actual_geometry); if (! intersection.isEmpty ()) { int area = intersection.width () * intersection.height (); if (area > intersected_area_max) { actual_screen = screen; actual_screen_geom = screen->availableGeometry (); if (area == area_actual_geometry) return; // Actual geom is completely on a screen: return intersected_area_max = area; } } } // If the actual geometry is on no screen, use deault geometry if (actual_screen == nullptr) { actual_geometry = default_geometry; return; } // There is a screen that holds a part of the actual geometry. // Now adjust actual geometry to this screen // Get some properties of the actual and intersected geometry int agx1, agy1, agx2, agy2; actual_geometry.getCoords (&agx1, &agy1, &agx2, &agy2); int isx1, isy1, isx2, isy2; intersection.getCoords (&isx1, &isy1, &isx2, &isy2); // Make the intersection the same size as the actual geometry if ((agx1 == isx1) && (agx2 != isx2)) isx1 = isx1 - agx2 + isx2; if ((agx1 != isx1) && (agx2 == isx2)) isx2 = isx2 + agx2 - isx2; if ((agy1 == isy1) && (agy2 != isy2)) isy1 = isy1 - agy2 + isy2; if ((agy1 != isy1) && (agy2 == isy2)) isy2 = isy2 + agy2 - isy2; // And compute again the intersection with the screen if this resizing // led to corners outside the screen actual_geometry = actual_screen_geom.intersected ( QRect (QPoint (isx1,isy1), QPoint (isx2,isy2))); } }