From cca66b9ec4e494c1d919bff0f71a820d8afab1fa Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:24:48 +0200 Subject: Adding upstream version 1.2.2. Signed-off-by: Daniel Baumann --- src/ui/view/view.h | 145 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100644 src/ui/view/view.h (limited to 'src/ui/view/view.h') diff --git a/src/ui/view/view.h b/src/ui/view/view.h new file mode 100644 index 0000000..3e3545a --- /dev/null +++ b/src/ui/view/view.h @@ -0,0 +1,145 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +#ifndef INKSCAPE_UI_VIEW_VIEW_H +#define INKSCAPE_UI_VIEW_VIEW_H +/* + * Authors: + * Lauris Kaplinski + * Ralf Stephan + * + * Copyright (C) 2001-2002 Lauris Kaplinski + * Copyright (C) 2001 Ximian, Inc. + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include +#include +#include +#include +#include "message.h" +#include "inkgc/gc-managed.h" +#include "gc-finalized.h" +#include "gc-anchored.h" +#include <2geom/forward.h> + +/** + * Iterates until true or returns false. + * When used as signal accumulator, stops emission if one slot returns true. + */ +struct StopOnTrue { + typedef bool result_type; + + template + result_type operator()(T_iterator first, T_iterator last) const{ + for (; first != last; ++first) + if (*first) return true; + return false; + } +}; + +/** + * Iterates until nonzero or returns 0. + * When used as signal accumulator, stops emission if one slot returns nonzero. + */ +struct StopOnNonZero { + typedef int result_type; + + template + result_type operator()(T_iterator first, T_iterator last) const{ + for (; first != last; ++first) + if (*first) return *first; + return 0; + } +}; + +class SPDocument; + +namespace Inkscape { + class MessageContext; + class MessageStack; + namespace UI { + namespace View { + +/** + * View is an abstract base class of all UI document views. This + * includes both the editing window and the SVG preview, but does not + * include the non-UI RGBA buffer-based Inkscape::Drawing nor the XML editor or + * similar views. The View base class has very little functionality of + * its own. + */ +class View : public GC::Managed<>, + public GC::Finalized, + public GC::Anchored +{ +public: + + View(); + + /** + * Deletes and nulls all View message stacks and disconnects it from signals. + */ + ~View() override; + + void close() { _close(); } + + /// Returns a pointer to the view's document. + SPDocument *doc() const + { return _doc; } + /// Returns a pointer to the view's message stack. + std::shared_ptr messageStack() const + { return _message_stack; } + /// Returns a pointer to the view's tipsMessageContext. + Inkscape::MessageContext *tipsMessageContext() const + { return _tips_message_context.get(); } + + void emitResized(gdouble width, gdouble height); + void requestRedraw(); + + virtual void onResized (double, double) {}; + virtual void onRedrawRequested() {}; + virtual void onStatusMessage (Inkscape::MessageType type, gchar const *message) {}; + virtual void onDocumentFilenameSet (gchar const* filename) {}; + +protected: + SPDocument *_doc; + std::shared_ptr _message_stack; + std::unique_ptr _tips_message_context; + + virtual void _close(); + + /** + * Disconnects the view from the document signals, connects the view + * to a new one, and emits the _document_set_signal on the view. + * + * This is code common to all subclasses and called from their + * setDocument() methods after they are done. + * + * @param doc The new document to connect the view to. + */ + virtual void setDocument(SPDocument *doc); + + sigc::signal _resized_signal; + sigc::signal _document_filename_set_signal; + sigc::signal _redraw_requested_signal; + +private: + sigc::connection _resized_connection; + sigc::connection _redraw_requested_connection; + sigc::connection _message_changed_connection; // foreign + sigc::connection _document_uri_set_connection; // foreign +}; + +}}} + +#endif // INKSCAPE_UI_VIEW_VIEW_H + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 : -- cgit v1.2.3