From 58a7d8c9cf50d4b2a9ae321684ca9d4ce4504260 Mon Sep 17 00:00:00 2001
From: Chris Xiong <chirs241097@gmail.com>
Date: Fri, 10 May 2024 00:04:04 -0400
Subject: Disable automatic hidpi scaling on maps. Add zoom option.

---
 mapman/src/painter.cpp | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

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

diff --git a/mapman/src/painter.cpp b/mapman/src/painter.cpp
index 3dafee6..bfd2f79 100644
--- a/mapman/src/painter.cpp
+++ b/mapman/src/painter.cpp
@@ -14,7 +14,7 @@
 class drop_rect : public QGraphicsRectItem
 {
 public:
-    drop_rect(int pos, map_painter *painter);
+    drop_rect(int pos, double dim, map_painter *painter);
 signals:
     void dropped(int pos, int id);
 protected:
@@ -25,8 +25,8 @@ private:
     map_painter *pt;
 };
 
-drop_rect::drop_rect(int pos, map_painter *painter) :
-    QGraphicsRectItem(QRectF(0, 0, 128, 128), nullptr),
+drop_rect::drop_rect(int pos, double dim, map_painter *painter) :
+    QGraphicsRectItem(QRectF(0, 0, dim, dim), nullptr),
     p(pos),
     pt(painter)
 {
@@ -51,10 +51,11 @@ void drop_rect::dropEvent(QGraphicsSceneDragDropEvent *e)
     else e->setDropAction(Qt::DropAction::IgnoreAction);
 }
 
-map_painter::map_painter() : l(nullptr)
+map_painter::map_painter(QWidget *parent) : l(nullptr)
 {
     s = new QGraphicsScene(0, 0, 0, 0);
-    v = new QGraphicsView(s);
+    v = new QGraphicsView(s, parent);
+    slice_dim = 128 / parent->devicePixelRatio();
     hc = vc = 0;
 }
 
@@ -68,7 +69,7 @@ void map_painter::set_dimension(int h, int v)
 {
     hc = h;
     vc = v;
-    s->setSceneRect(0, 0, hc * 128, vc * 128);
+    s->setSceneRect(0, 0, hc * slice_dim, vc * slice_dim);
     s->clear();
     slices.clear();
     slices.resize(hc * vc, nullptr);
@@ -78,11 +79,11 @@ void map_painter::set_dimension(int h, int v)
         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);
+            t->setPos(j * slice_dim + slice_dim / 2 - t->boundingRect().width() / 2, i * slice_dim + slice_dim / 2 - t->boundingRect().height() / 2);
+            auto r = new drop_rect(i * hc + j, slice_dim, this);
             s->addItem(r);
             bgspr[i * hc + j] = {t, r};
-            r->setPos(j * 128, i * 128);
+            r->setPos(j * slice_dim, i * slice_dim);
         }
 }
 
@@ -101,7 +102,7 @@ void map_painter::set_map_id(int pos, bool populated, int id, bool user_input)
         QPixmap pm;
         if (!QPixmapCache::find(QString("map_%1").arg(id), &pm))
         {
-            pm = pixmap_of_map_data(l->get_map(id).map_data);
+            pm = pixmap_of_map_data(l->get_map(id).map_data, this->v->devicePixelRatio());
             QPixmapCache::insert(QString("map_%1").arg(id), pm);
         }
         auto p = s->addPixmap(pm);
@@ -112,7 +113,7 @@ void map_painter::set_map_id(int pos, bool populated, int id, bool user_input)
             .arg(m.locked ? "\nLocked" : ""));
         int x = pos / hc;
         int y = pos % hc;
-        p->setPos(y * 128, x * 128);
+        p->setPos(y * slice_dim, x * slice_dim);
         slices[pos] = p;
         static_cast<QAbstractGraphicsShapeItem*>(t)->setPen(QColor(Qt::GlobalColor::transparent));
         static_cast<QAbstractGraphicsShapeItem*>(r)->setPen(QColor(Qt::GlobalColor::transparent));
@@ -121,4 +122,9 @@ void map_painter::set_map_id(int pos, bool populated, int id, bool user_input)
         emit map_id_changed(pos, populated, id);
 }
 
+void map_painter::set_scaling(double scale)
+{
+    v->setTransform(QTransform::fromScale(scale, scale));
+}
+
 void map_painter::set_map_library(map_library *lib) { l = lib; }
-- 
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