Better layout registers

This does dynamic layout of registers. This implemntation is just
terrible. It works but it's almost unreadable. It's just too much code
for such a small feature. But I can't be bothered to refactor it on top
of hacking it.

1 files changed, 64 insertions, 0 deletions

diff --git a/qtmips_gui/statictable.h b/qtmips_gui/statictable.h
new file mode 100644
index 0000000..8248aa3
--- /dev/null
+++ b/qtmips_gui/statictable.h
@@ -0,0 +1,64 @@
+#ifndef STATICTABLE_H
+#define STATICTABLE_H
+
+#include <QWidget>
+#include <QLayout>
+#include <QList>
+#include <QVector>
+
+/*
+ * This implements new layout and widget in the same time.
+ * Basic idea is that we need some table view that can also fill in horizontal space.
+ * This widget paints simple table under neath the widgets and lays them out in to them.
+ * It shows more than one column when there is enought horizontal space.
+ */
+
+class StaticTableLayout : public QLayout {
+public:
+    StaticTableLayout(QWidget *parent, int margin = 4, int horizontal_big_spacing = 4, int horizontal_small_spacing = 8, int vertical_spacing = 4);
+    ~StaticTableLayout();
+
+    Qt::Orientations expandingDirections() const override;
+    bool hasHeightForWidth() const override;
+    int heightForWidth(int) const override;
+    QSize minimumSize() const override;
+    void setGeometry(const QRect &rect) override;
+    QSize sizeHint() const override;
+
+    void addItem(QLayoutItem *item) override;
+    QLayoutItem *itemAt(int index) const override;
+    QLayoutItem *takeAt(int index) override;
+    int count() const override; // This returns number of item blocks
+
+    void addRow(QList<QWidget*>); // This adds row of widgets
+
+    void itemRect(QRect &rect, QVector<int> &separators, int i); // This returns single item rectable (if expad_margin and it's on edge also count in margin)
+    int columns();
+
+protected:
+    int shspace, bhspace, vspace;
+    QVector<QVector<QLayoutItem*>> items;
+
+    int row_height;
+    QList<QList<int>> row_widths;
+
+    int layout_count_approx(const QRect &rect) const;
+    int layout_size(int &row_h, QList<QList<int>> &row_w, int count) const;
+    void layout_parms(QRect &rect, int &row_h, QList<QList<int>> &row_w, int &count) const;
+    void do_layout(const QRect &rect);
+    int layout_height(int width) const;
+};
+
+class StaticTable : public QWidget {
+public:
+    StaticTable(QWidget *parent = nullptr);
+
+    void addRow(QList<QWidget*>);
+
+protected:
+    void paintEvent(QPaintEvent*);
+
+    StaticTableLayout layout;
+};
+
+#endif // STATICTABLE_H