UI Fixes and Polish

src/slic3r/GUI/FilamentBitmapUtils.hpp

@@ -5,6 +5,9 @@
 #include <wx/colour.h>
 #include <wx/dc.h>
 #include <wx/gdicmn.h>
+#include <wx/geometry.h>
+#include <wx/graphics.h>
+#include <array>
 #include <vector>
 
 // Orca: forward-declare so the header is self-contained outside libslic3r_gui's
@@ -79,6 +82,81 @@ wxBitmap create_gradient_ramp_bitmap(const std::vector<wxColour>& ramp, const wx
 void recompute_mixed_slot_colors(std::vector<wxColour>& colors,
                                  const Slic3r::DynamicPrintConfig& cfg);
 
+// --- Gradient plot (shared by GradientCurveEditor and the Publish dialog's read-only
+// preview). The plot is a square 1:1 rect laid out with the editor's ratios so both
+// render identically; curves are drawn as sub-pixel anti-aliased polylines through
+// wxGCDC so they never quantize to whole pixels.
+
+// One curve of the plot: screen-space sub-pixel points already mapped into the plot
+// rect, the stroke colour and the stroke width in DIP.
+struct MixedGradientCurve
+{
+    std::vector<wxPoint2DDouble> points;
+    wxColour                     colour;
+    int                          stroke_dip;
+};
+
+// Theme tokens, resolved by the caller through StateColor::darkModeColorFor.
+struct MixedGradientTheme
+{
+    wxColour background;   // for near-background outline detection
+    wxColour grid;         // grid line
+    wxColour axis;         // axis + arrow fill
+    wxColour label;        // "Material Ratio" / "Model Height"
+    wxColour label_strong; // "100%"
+    wxColour outline;      // near-background curve lift
+    wxColour point_fill;   // anchor fill
+};
+
+// Square 1:1 plot rect inside `canvas`, using the editor's plot ratios.
+wxRect mixed_gradient_plot_rect(const wxSize& canvas);
+
+// Draw the whole plot (grid, axes + arrowheads, axis labels, each curve with an optional
+// near-background outline, and anchor circles). `anchors` are empty when the caller has
+// none to show. `dc` is the caller's buffered paint DC; a wxGCDC is created inside so the
+// geometry gets anti-aliased.
+void draw_mixed_gradient_plot(wxDC& dc, const wxSize& canvas,
+                              const std::vector<MixedGradientCurve>& curves,
+                              const std::vector<wxPoint2DDouble>& anchors,
+                              const MixedGradientTheme& theme);
+
+// --- Ratio bar (2-component continuous blend + divider, matching MixedFilamentDialog).
+// Colours blend first->second across the rect; the divider marks `second_fraction` of the
+// rect's width (the second component's share, 0..1).
+void draw_mixed_ratio_blend_bar(wxDC& dc, const wxRect& rect, const wxColour& first,
+                                const wxColour& second, double second_fraction);
+
+// Fallback ratio bar for N>2 non-gradient slots: one solid segment per component,
+// widths proportional to shares. Label text (the "NN%" inside wide-enough segments) is
+// the caller's concern.
+void draw_mixed_ratio_segments(wxDC& dc, const wxRect& rect, const std::vector<wxColour>& colours,
+                               const std::vector<double>& shares);
+
+// --- Triangle picker (3-component), shared by MixedFilamentDialog and the Publish preview.
+struct MixedTriangleTheme
+{
+    wxColour background;
+    wxColour outline;     // triangle border
+    wxColour ring;        // drag-handle ring
+    wxColour label;       // "Ratio" title + per-vertex labels
+};
+
+// The three vertices of the read-only/miniature triangle inside a `size` square panel,
+// with `margin_dip` inset. Order: top, bottom-left, bottom-right.
+std::array<TriPoint, 3> mixed_triangle_vertices(const wxSize& size, double margin_dip = 20.0);
+
+// Draw background, the cached barycentric fill, the outline and the drag-handle marker.
+// `weights` are the three barycentric shares (sum 1). The "Ratio" title and per-vertex
+// percentage labels are drawn by the caller so the interactive editor can keep its own
+// live child labels while the read-only preview draws them as text.
+void draw_mixed_triangle_picker(wxDC& dc, const wxSize& size, const std::array<wxColour, 3>& colours,
+                                const std::array<double, 3>& weights, const MixedTriangleTheme& theme);
+
+// Draw the "Ratio" title plus one "NN%" label per vertex (used by the read-only preview;
+// the interactive editor positions its own live labels instead).
+void draw_mixed_triangle_labels(wxDC& dc, const wxSize& size, const std::array<double, 3>& weights,
+                                const MixedTriangleTheme& theme);
+
 }} // namespace Slic3r::GUI
 
 #endif // slic3r_GUI_FilamentBitmapUtils_hpp_