From 93cf929f29dea490ed60e5300cacdd99886c988e Mon Sep 17 00:00:00 2001
From: Chris Xiong <chirs241097@gmail.com>
Date: Sat, 9 Sep 2023 20:09:50 -0400
Subject: Add the standalone portion of mapman.

---
 mapman/src/painter.cpp | 113 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 mapman/src/painter.cpp

(limited to 'mapman/src/painter.cpp')

diff --git a/mapman/src/painter.cpp b/mapman/src/painter.cpp
new file mode 100644
index 0000000..876184e
--- /dev/null
+++ b/mapman/src/painter.cpp
@@ -0,0 +1,113 @@
+#include "painter.hpp"
+#include "library.hpp"
+#include "utils.hpp"
+
+#include <QGraphicsView>
+#include <QGraphicsScene>
+#include <QGraphicsSimpleTextItem>
+#include <QGraphicsRectItem>
+#include <QGraphicsPixmapItem>
+#include <QGraphicsSceneDragDropEvent>
+#include <QMimeData>
+#include <QPixmapCache>
+
+class drop_rect : public QGraphicsRectItem
+{
+public:
+    drop_rect(int pos, map_painter *painter);
+signals:
+    void dropped(int pos, int id);
+protected:
+    void dragEnterEvent(QGraphicsSceneDragDropEvent *e);
+    void dropEvent(QGraphicsSceneDragDropEvent *e);
+private:
+    int p;
+    map_painter *pt;
+};
+
+drop_rect::drop_rect(int pos, map_painter *painter) :
+    QGraphicsRectItem(QRectF(0, 0, 128, 128), nullptr),
+    p(pos),
+    pt(painter)
+{
+    setAcceptDrops(true);
+    setPen(QPen(Qt::GlobalColor::black, 4));
+}
+
+void drop_rect::dragEnterEvent(QGraphicsSceneDragDropEvent *e)
+{
+    auto ba = e->mimeData()->data("application/x-map-id");
+    e->setAccepted(ba.length() >= 4);
+}
+
+void drop_rect::dropEvent(QGraphicsSceneDragDropEvent *e)
+{
+    auto ba = e->mimeData()->data("application/x-map-id");
+    if (ba.length() >= 4)
+    {
+        e->setDropAction(Qt::DropAction::CopyAction);
+        pt->set_map_id(p, true, *reinterpret_cast<int*>(ba.data()), true);
+    }
+    else e->setDropAction(Qt::DropAction::IgnoreAction);
+}
+
+map_painter::map_painter() : l(nullptr)
+{
+    s = new QGraphicsScene(0, 0, 0, 0);
+    v = new QGraphicsView(s);
+    hc = vc = 0;
+}
+
+map_painter::~map_painter()
+{
+    delete s;
+    delete v;
+}
+
+void map_painter::set_dimension(int h, int v)
+{
+    hc = h;
+    vc = v;
+    s->setSceneRect(0, 0, hc * 128, vc * 128);
+    s->clear();
+    slices.clear();
+    slices.resize(hc * vc, nullptr);
+    for (int i = 0; i < vc; ++i)
+        for (int j = 0; j < hc; ++j)
+        {
+            auto t = s->addSimpleText(QString::number(i * hc + j));
+            t->setPos(j * 128 + 64 - t->boundingRect().width() / 2, i * 128 + 64 - t->boundingRect().height() / 2);
+            auto r = new drop_rect(i * hc + j, this);
+            s->addItem(r);
+            r->setPos(j * 128, i * 128);
+        }
+}
+
+void map_painter::set_map_id(int pos, bool populated, int id, bool user_input)
+{
+    if (!l || pos >= hc * vc || pos < 0) return;
+    if (slices[pos])
+    {
+        s->removeItem(slices[pos]);
+        delete slices[pos];
+        slices[pos] = nullptr;
+    }
+    if (populated)
+    {
+        QPixmap pm;
+        if (!QPixmapCache::find(QString("map_%1").arg(id), &pm))
+        {
+            pm = pixmap_of_map_data(l->get_map(id).map_data);
+            QPixmapCache::insert(QString("map_%1").arg(id), pm);
+        }
+        auto p = s->addPixmap(pm);
+        int x = pos / hc;
+        int y = pos % hc;
+        p->setPos(y * 128, x * 128);
+        slices[pos] = p;
+    }
+    if (user_input)
+        emit map_id_changed(pos, populated, id);
+}
+
+void map_painter::set_map_library(map_library *lib) { l = lib; }
-- 
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