]> sigrok.org Git - pulseview.git/commitdiff
ScaleSignalHandle: Initial implementation
authorJoel Holdsworth <redacted>
Sun, 30 Aug 2015 15:52:14 +0000 (09:52 -0600)
committerJoel Holdsworth <redacted>
Sun, 18 Oct 2015 21:32:30 +0000 (15:32 -0600)
CMakeLists.txt
pv/view/signal.cpp
pv/view/signal.hpp
pv/view/signalscalehandle.cpp [new file with mode: 0644]
pv/view/signalscalehandle.hpp [new file with mode: 0644]

index 51170dee62255b9aa5fe6735423d945f73d83f9b..caf2eac3fedc3a063068ebdfb2b8f4c6808d7045 100644 (file)
@@ -210,6 +210,7 @@ set(pulseview_SOURCES
        pv/view/rowitem.cpp
        pv/view/ruler.cpp
        pv/view/signal.cpp
+       pv/view/signalscalehandle.cpp
        pv/view/timeitem.cpp
        pv/view/timemarker.cpp
        pv/view/trace.cpp
@@ -263,6 +264,7 @@ set(pulseview_HEADERS
        pv/view/rowitem.hpp
        pv/view/ruler.hpp
        pv/view/signal.hpp
+       pv/view/signalscalehandle.hpp
        pv/view/timeitem.hpp
        pv/view/timemarker.hpp
        pv/view/trace.hpp
index 57d788343e2c429471af950597655c471226a2eb..47e91f4b9a67f9a904d0b059e3da5cee543a35ab 100644 (file)
@@ -35,6 +35,7 @@
 #include "view.hpp"
 
 using std::shared_ptr;
+using std::make_shared;
 
 using sigrok::Channel;
 
@@ -63,7 +64,8 @@ Signal::Signal(pv::Session &session,
        Trace(QString::fromUtf8(channel->name().c_str())),
        session_(session),
        channel_(channel),
-       items_(),
+       scale_handle_(make_shared<SignalScaleHandle>(*this)),
+       items_({scale_handle_}),
        name_widget_(nullptr),
        updating_name_widget_(false)
 {
index 714b44f6d9d27fcfc4881dc9e4850138f575b0a4..db3286528a699964920cd47b3048d5daa7255428 100644 (file)
@@ -28,6 +28,7 @@
 
 #include <stdint.h>
 
+#include "signalscalehandle.hpp"
 #include "trace.hpp"
 #include "viewitemowner.hpp"
 
@@ -104,6 +105,7 @@ protected:
        pv::Session &session_;
        std::shared_ptr<sigrok::Channel> channel_;
 
+       const std::shared_ptr<SignalScaleHandle> scale_handle_;
        const item_list items_;
 
        QComboBox *name_widget_;
diff --git a/pv/view/signalscalehandle.cpp b/pv/view/signalscalehandle.cpp
new file mode 100644 (file)
index 0000000..59e618c
--- /dev/null
@@ -0,0 +1,106 @@
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2015 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <algorithm>
+
+#include <QRadialGradient>
+
+#include "signal.hpp"
+#include "signalscalehandle.hpp"
+#include "tracetreeitemowner.hpp"
+
+using std::max;
+using std::min;
+
+namespace pv {
+namespace view {
+
+SignalScaleHandle::SignalScaleHandle(Signal &owner) :
+       owner_(owner)
+{
+}
+
+bool SignalScaleHandle::enabled() const
+{
+       return selected() || owner_.selected();
+}
+
+void SignalScaleHandle::select(bool select)
+{
+       ViewItem::select(select);
+       owner_.owner()->row_item_appearance_changed(true, true);
+}
+
+void SignalScaleHandle::drag_release()
+{
+       RowItem::drag_release();
+       owner_.scale_handle_released();
+       owner_.owner()->row_item_appearance_changed(true, true);
+}
+
+void SignalScaleHandle::drag_by(const QPoint &delta)
+{
+       owner_.scale_handle_dragged(
+               drag_point_.y() + delta.y() - owner_.get_visual_y());
+}
+
+QPoint SignalScaleHandle::point(const QRect &rect) const
+{
+       return owner_.point(rect) + QPoint(0, owner_.scale_handle_offset());
+}
+
+QRectF SignalScaleHandle::hit_box_rect(const ViewItemPaintParams &pp) const
+{
+       const int text_height = ViewItemPaintParams::text_height();
+       const double x = -pp.pixels_offset() - text_height / 2;
+       const double min_x = pp.left() + text_height;
+       const double max_x = pp.right() - text_height * 2;
+       return QRectF(min(max(x, min_x), max_x),
+               owner_.get_visual_y() + owner_.scale_handle_offset() -
+                       text_height / 2,
+               text_height, text_height);
+}
+
+void SignalScaleHandle::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
+{
+       if (!enabled())
+               return;
+
+       const QRectF r(hit_box_rect(pp));
+       const QPointF c = (r.topLeft() + 2 * r.center()) / 3;
+       QRadialGradient gradient(c, r.width(), c);
+
+       if (selected()) {
+               gradient.setColorAt(0.0, QColor(255, 255, 255));
+               gradient.setColorAt(0.75, QColor(192, 192, 192));
+               gradient.setColorAt(1.0, QColor(128, 128, 128));
+       } else {
+               gradient.setColorAt(0.0, QColor(192, 192, 192));
+               gradient.setColorAt(0.75, QColor(128, 128, 128));
+               gradient.setColorAt(1.0, QColor(128, 128, 128));
+       }
+
+       p.setBrush(QBrush(gradient));
+       p.setPen(QColor(128, 128, 128));
+       p.drawEllipse(r);
+}
+
+} // view
+} // pv
diff --git a/pv/view/signalscalehandle.hpp b/pv/view/signalscalehandle.hpp
new file mode 100644 (file)
index 0000000..a91d678
--- /dev/null
@@ -0,0 +1,93 @@
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2015 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#ifndef PULSEVIEW_PV_VIEW_SIGNALSCALEHANDLE_HPP
+#define PULSEVIEW_PV_VIEW_SIGNALSCALEHANDLE_HPP
+
+#include "rowitem.hpp"
+
+namespace pv {
+namespace view {
+
+class Signal;
+
+/**
+ * A row item owned by a @c Signal that implements the v-scale adjustment grab
+ * handle.
+ */
+class SignalScaleHandle : public RowItem
+{
+       Q_OBJECT
+public:
+       /**
+        * Constructor
+        */
+       explicit SignalScaleHandle(Signal &owner);
+
+public:
+       /**
+        * Returns true if the parent item is enabled.
+        */
+       bool enabled() const;
+
+       /**
+        * Selects or deselects the signal.
+        */
+       void select(bool select = true);
+
+       /**
+        * Sets this item into the un-dragged state.
+        */
+       void drag_release();
+
+       /**
+        * Drags the item to a delta relative to the drag point.
+        * @param delta the offset from the drag point.
+        */
+       void drag_by(const QPoint &delta);
+
+       /**
+        * Get the drag point.
+        * @param rect the rectangle of the widget area.
+        */
+       QPoint point(const QRect &rect) const;
+
+       /**
+        * Computes the outline rectangle of the viewport hit-box.
+        * @param rect the rectangle of the viewport area.
+        * @return Returns the rectangle of the hit-box.
+        */
+       QRectF hit_box_rect(const ViewItemPaintParams &pp) const;
+
+       /**
+        * Paints the foreground layer of the item with a QPainter
+        * @param p the QPainter to paint into.
+        * @param pp the painting parameters object to paint with.
+        **/
+       void paint_fore(QPainter &p, const ViewItemPaintParams &pp);
+
+private:
+       Signal &owner_;
+};
+
+} // namespace view
+} // namespace pv
+
+#endif // PULSEVIEW_PV_VIEW_SIGNALSCALEHANDLE_HPP