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OrcaSlicer/src/slic3r/GUI/FilamentBitmapUtils.cpp
T
Lam Wei Lun 684cd37f8d UI Fixes and Polish
2026-08-31 18:01:15 +08:00

876 lines
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#include <wx/dcmemory.h>
#include <wx/dcgraph.h>
#include <wx/graphics.h>
#include <wx/settings.h>
#include <wx/window.h>
#include <algorithm>
#include <cmath>
#include <map>
#include <numeric>
#include <string>
#include <tuple>
#include "EncodedFilament.hpp"
#include "FilamentBitmapUtils.hpp"
#include "GUI_App.hpp"
#include "GuiColor.hpp"
#include "I18N.hpp"
#include "Widgets/Label.hpp"
#include "Widgets/StateColor.hpp"
#include "libslic3r/FilamentMixer.hpp"
#include "libslic3r/PrintConfig.hpp"
namespace Slic3r { namespace GUI {
// Barycentric utilities for a ternary (triangle) ratio picker.
double tri_signed_area2(TriPoint a, TriPoint b, TriPoint c)
{
return (b.x - a.x) * (c.y - a.y) - (c.x - a.x) * (b.y - a.y);
}
bool tri_contains(TriPoint p, TriPoint v0, TriPoint v1, TriPoint v2)
{
double total = tri_signed_area2(v0, v1, v2);
if (std::abs(total) < 1e-9) return false;
double s0 = tri_signed_area2(p, v1, v2) / total;
double s1 = tri_signed_area2(v0, p, v2) / total;
double s2 = 1.0 - s0 - s1;
return s0 >= -0.001 && s1 >= -0.001 && s2 >= -0.001;
}
void tri_barycentric(TriPoint p, TriPoint v0, TriPoint v1, TriPoint v2,
double& w0, double& w1, double& w2)
{
double total = std::abs(tri_signed_area2(v0, v1, v2));
if (total < 1e-9) { w0 = w1 = w2 = 1.0 / 3.0; return; }
w0 = std::abs(tri_signed_area2(p, v1, v2)) / total;
w1 = std::abs(tri_signed_area2(v0, p, v2)) / total;
w2 = 1.0 - w0 - w1;
w0 = std::clamp(w0, 0.0, 1.0);
w1 = std::clamp(w1, 0.0, 1.0);
w2 = std::clamp(w2, 0.0, 1.0);
double s = w0 + w1 + w2;
if (s > 0) { w0 /= s; w1 /= s; w2 /= s; }
}
TriPoint tri_clamp(TriPoint p, TriPoint v0, TriPoint v1, TriPoint v2)
{
double w0, w1, w2;
tri_barycentric(p, v0, v1, v2, w0, w1, w2);
return {w0 * v0.x + w1 * v1.x + w2 * v2.x,
w0 * v0.y + w1 * v1.y + w2 * v2.y};
}
void fill_gradient_rect_east(wxDC& dc, const wxRect& rect, const wxColour& from, const wxColour& to)
{
if (rect.width <= 0 || rect.height <= 0) return;
auto mix_channel = [](unsigned char a, unsigned char b, double t) {
return static_cast<unsigned char>(a + (b - a) * t + 0.5);
};
dc.SetPen(*wxTRANSPARENT_PEN);
for (int x = 0; x < rect.width; ++x) {
const double t = rect.width > 1 ? static_cast<double>(x) / (rect.width - 1) : 0.0;
const wxColour col(mix_channel(from.Red(), to.Red(), t),
mix_channel(from.Green(), to.Green(), t),
mix_channel(from.Blue(), to.Blue(), t),
mix_channel(from.Alpha(), to.Alpha(), t));
dc.SetBrush(wxBrush(col));
dc.DrawRectangle(rect.x + x, rect.y, 1, rect.height);
}
}
static std::string to_hex(const wxColour& c)
{
return wxString::Format("#%02X%02X%02X", c.Red(), c.Green(), c.Blue()).ToStdString();
}
wxColour blend_n_colors(const std::vector<wxColour>& cols, const std::vector<double>& weights)
{
const size_t n = std::min(cols.size(), weights.size());
std::vector<std::string> hex_colors;
std::vector<int> int_weights;
hex_colors.reserve(n);
int_weights.reserve(n);
for (size_t i = 0; i < n; ++i) {
hex_colors.push_back(to_hex(cols[i]));
// Scale double weights (e.g. 0.5) to int (5000) for blend_color_multi;
// only relative magnitude matters.
int_weights.push_back(static_cast<int>(std::lround(weights[i] * 10000.0)));
}
wxColour blended(Slic3r::blend_color_multi(hex_colors, int_weights));
return blended.IsOk() ? blended : wxColour(128, 128, 128);
}
std::vector<wxColour> sample_gradient_ramp(const wxColour& first,
const wxColour& second,
const Slic3r::GradientCurve& curve,
int steps)
{
std::vector<wxColour> ramp;
if (steps <= 0 || curve.points.size() < 2) return ramp;
ramp.reserve(steps);
for (int i = 0; i < steps; ++i) {
const double t = (steps > 1) ? (i + 0.5) / steps : 0.5;
const double r1 = Slic3r::sample_gradient_curve(curve, t);
ramp.push_back(blend_n_colors({first, second}, {r1, 1.0 - r1}));
}
return ramp;
}
// Resolve the curve a gradient slot is sampled with, mirroring the slicer's fallback in
// ToolOrdering: a custom curve wins, otherwise a straight line between gradient_range's
// endpoints, otherwise the 0.10 -> 0.90 default.
Slic3r::GradientCurve mixed_gradient_curve(const Slic3r::DynamicPrintConfig& cfg, size_t slot)
{
const auto* curve_opt = cfg.option<ConfigOptionStrings>("filament_mixed_gradient_curve");
if (curve_opt && slot < curve_opt->values.size() && !curve_opt->values[slot].empty()) {
Slic3r::GradientCurve custom = Slic3r::parse_gradient_curve(curve_opt->values[slot]);
if (custom.points.size() >= 2) return custom;
}
double start = kGradientMinRatio, end = kGradientMaxRatio;
const auto* range_opt = cfg.option<ConfigOptionStrings>("filament_mixed_gradient_range");
if (range_opt && slot < range_opt->values.size() && !range_opt->values[slot].empty()) {
CNumericLocalesSetter c_locale_setter;
float v0 = 0, v1 = 0;
if (std::sscanf(range_opt->values[slot].c_str(), "%f,%f", &v0, &v1) == 2 &&
v0 > 0 && v0 < 1.0 && v1 > 0 && v1 < 1.0) {
start = v0;
end = v1;
}
}
Slic3r::GradientCurve curve;
curve.points = {{0.0, start, NAN, NAN}, {1.0, end, NAN, NAN}};
return curve;
}
std::vector<wxColour> mixed_gradient_ramp(const Slic3r::DynamicPrintConfig& cfg, size_t slot, int steps)
{
const auto* is_mixed_opt = cfg.option<ConfigOptionBools>("filament_is_mixed");
const auto* grad_opt = cfg.option<ConfigOptionBools>("filament_mixed_gradient");
const auto* comp_opt = cfg.option<ConfigOptionStrings>("filament_mixed_components");
const auto* colour_opt = cfg.option<ConfigOptionStrings>("filament_colour");
if (!is_mixed_opt || !grad_opt || !comp_opt || !colour_opt) return {};
if (slot >= is_mixed_opt->values.size() || !is_mixed_opt->values[slot]) return {};
if (slot >= grad_opt->values.size() || !grad_opt->values[slot]) return {};
if (slot >= comp_opt->values.size()) return {};
// Only two-component slots fade; anything else stays on the plain blended swatch.
const auto comp_ids = Slic3r::parse_mixed_components(comp_opt->values[slot]);
if (comp_ids.size() != 2) return {};
auto component_colour = [&](unsigned int id) {
wxColour c = (id >= 1 && id <= colour_opt->values.size()) ? wxColour(colour_opt->values[id - 1]) : wxColour();
return c.IsOk() ? c : wxColour("#D9D9D9");
};
// Both gradient_range and the curve express the *first* component's ratio over Z, so
// the components stay in config order and the curve alone decides which end is which.
return sample_gradient_ramp(component_colour(comp_ids[0]), component_colour(comp_ids[1]),
mixed_gradient_curve(cfg, slot), steps);
}
void fill_gradient_ramp_rect(wxDC& dc, const wxRect& rect, const std::vector<wxColour>& ramp)
{
if (rect.width <= 0 || rect.height <= 0 || ramp.empty()) return;
dc.SetPen(*wxTRANSPARENT_PEN);
for (int y = 0; y < rect.height; ++y) {
// Row 0 is the top of the rect and so takes the ramp's last entry, the model's top.
// Mapping over height - 1 puts both ends of the ramp on screen even in a short swatch.
const double t = (rect.height > 1) ? (double) (rect.height - 1 - y) / (rect.height - 1) : 0.5;
dc.SetBrush(wxBrush(ramp[static_cast<size_t>(t * (ramp.size() - 1) + 0.5)]));
dc.DrawRectangle(rect.x, rect.y + y, rect.width, 1);
}
}
// Helper struct to hold bitmap and DC
struct BitmapDC {
wxBitmap bitmap;
wxMemoryDC dc;
BitmapDC(const wxSize& size) : bitmap(size){
#ifdef __WXOSX__
bitmap.UseAlpha();
#endif
dc.SelectObject(bitmap);
// Don't set white background - let the color patterns fill the entire area
dc.SetPen(*wxTRANSPARENT_PEN);
}
};
static BitmapDC init_bitmap_dc(const wxSize& size) {
return BitmapDC(size);
}
wxBitmap create_gradient_ramp_bitmap(const std::vector<wxColour>& ramp, const wxSize& size)
{
if (ramp.empty()) return wxNullBitmap;
BitmapDC bdc = init_bitmap_dc(size);
if (!bdc.dc.IsOk()) return wxNullBitmap;
fill_gradient_ramp_rect(bdc.dc, wxRect(0, 0, size.GetWidth(), size.GetHeight()), ramp);
bdc.dc.SelectObject(wxNullBitmap);
return bdc.bitmap;
}
// Check if a color is transparent (alpha == 0)
static bool is_transparent_color(const wxColour& color) {
return color.Alpha() == 0;
}
// Create transparent bitmap
static wxBitmap create_transparent_bitmap(const wxSize& size) {
BitmapDC bdc = init_bitmap_dc(size);
if (!bdc.dc.IsOk()) return wxNullBitmap;
// Create checkerboard pattern
wxColour light_gray(217, 217, 217); // #D9D9D9
wxColour white(255, 255, 255);
bool is_dark_mode = wxGetApp().dark_mode();
// Calculate parameters based on mode
int start_pos = is_dark_mode ? 0 : 1;
int end_width = is_dark_mode ? size.GetWidth() : size.GetWidth() - 1;
int end_height = is_dark_mode ? size.GetHeight() : size.GetHeight() - 1;
int square_size = std::max(6, std::min(end_width - start_pos, end_height - start_pos) / 8);
// Draw checkerboard
for (int x = start_pos; x < end_width; x += square_size) {
for (int y = start_pos; y < end_height; y += square_size) {
bool is_light = ((x / square_size) + (y / square_size)) % 2 == 0;
bdc.dc.SetBrush(wxBrush(is_light ? white : light_gray));
int width = std::min(square_size, size.GetWidth() - x);
int height = std::min(square_size, size.GetHeight() - y);
bdc.dc.DrawRectangle(x, y, width, height);
}
}
// Add border only in light mode
if (!is_dark_mode) {
bdc.dc.SetPen(wxPen(wxColour(130, 130, 128), 1, wxPENSTYLE_SOLID));
bdc.dc.SetBrush(*wxTRANSPARENT_BRUSH);
bdc.dc.DrawRectangle(0, 0, size.GetWidth(), size.GetHeight());
}
bdc.dc.SelectObject(wxNullBitmap);
return bdc.bitmap;
}
// Sort colors by HSV values (primarily by hue, then saturation, then value)
static void sort_colors_by_hsv(std::vector<wxColour>& colors) {
if (colors.size() < 2) return;
std::sort(colors.begin(), colors.end(),
[](const wxColour& a, const wxColour& b) {
ColourHSV ha = wxColourToHSV(a);
ColourHSV hb = wxColourToHSV(b);
if (ha.h != hb.h) return ha.h < hb.h;
if (ha.s != hb.s) return ha.s < hb.s;
return ha.v < hb.v;
});
}
static wxBitmap create_single_filament_bitmap(const wxColour& color, const wxSize& size)
{
// Check if color is transparent
if (is_transparent_color(color)) {
return create_transparent_bitmap(size);
}
BitmapDC bdc = init_bitmap_dc(size);
if (!bdc.dc.IsOk()) return wxNullBitmap;
bdc.dc.SetBackground(wxBrush(color));
bdc.dc.Clear();
bdc.dc.SetBrush(wxBrush(color));
bdc.dc.DrawRectangle(0, 0, size.GetWidth(), size.GetHeight());
// Add gray border for light colors (similar to wxExtensions.cpp logic) - only in light mode
if (!wxGetApp().dark_mode() && color.Red() > 224 && color.Blue() > 224 && color.Green() > 224) {
bdc.dc.SetPen(wxPen(wxColour(130, 130, 128), 1, wxPENSTYLE_SOLID));
bdc.dc.SetBrush(*wxTRANSPARENT_BRUSH);
bdc.dc.DrawRectangle(0, 0, size.GetWidth(), size.GetHeight());
}
// Add white border for dark colors - only in dark mode
if(wxGetApp().dark_mode() && color.Red() < 45 && color.Blue() < 45 && color.Green() < 45) {
bdc.dc.SetPen(wxPen(wxColour(207, 207, 207), 1, wxPENSTYLE_SOLID));
bdc.dc.SetBrush(*wxTRANSPARENT_BRUSH);
bdc.dc.DrawRectangle(0, 0, size.GetWidth(), size.GetHeight());
}
bdc.dc.SelectObject(wxNullBitmap);
return bdc.bitmap;
}
static wxBitmap create_dual_filament_bitmap(const wxColour& color1, const wxColour& color2, const wxSize& size)
{
BitmapDC bdc = init_bitmap_dc(size);
int half_width = size.GetWidth() / 2;
bdc.dc.SetBrush(wxBrush(color1));
bdc.dc.DrawRectangle(0, 0, half_width, size.GetHeight());
bdc.dc.SetBrush(wxBrush(color2));
bdc.dc.DrawRectangle(half_width, 0, size.GetWidth() - half_width, size.GetHeight());
bdc.dc.SelectObject(wxNullBitmap);
return bdc.bitmap;
}
static wxBitmap create_triple_filament_bitmap(const std::vector<wxColour>& colors, const wxSize& size)
{
BitmapDC bdc = init_bitmap_dc(size);
int third_width = size.GetWidth() / 3;
int remaining_width = size.GetWidth() - (third_width * 2);
// Draw three vertical sections
bdc.dc.SetBrush(wxBrush(colors[0]));
bdc.dc.DrawRectangle(0, 0, third_width, size.GetHeight());
bdc.dc.SetBrush(wxBrush(colors[1]));
bdc.dc.DrawRectangle(third_width, 0, third_width, size.GetHeight());
bdc.dc.SetBrush(wxBrush(colors[2]));
bdc.dc.DrawRectangle(third_width * 2, 0, remaining_width, size.GetHeight());
bdc.dc.SelectObject(wxNullBitmap);
return bdc.bitmap;
}
static wxBitmap create_quadruple_filament_bitmap(const std::vector<wxColour>& colors, const wxSize& size)
{
BitmapDC bdc = init_bitmap_dc(size);
int half_width = (size.GetWidth() + 1) / 2;
int half_height = (size.GetHeight() + 1) / 2;
const int rects[4][4] = {
{0, 0, half_width, half_height}, // Top left
{half_width, 0, size.GetWidth() - half_width, half_height}, // Top right
{0, half_height, half_width, size.GetHeight() - half_height}, // Bottom left
{half_width, half_height, size.GetWidth() - half_width, size.GetHeight() - half_height} // Bottom right
};
for (int i = 0; i < 4; i++) {
bdc.dc.SetBrush(wxBrush(colors[i]));
bdc.dc.DrawRectangle(rects[i][0], rects[i][1], rects[i][2], rects[i][3]);
}
bdc.dc.SelectObject(wxNullBitmap);
return bdc.bitmap;
}
static wxBitmap create_gradient_filament_bitmap(const std::vector<wxColour>& colors, const wxSize& size)
{
BitmapDC bdc = init_bitmap_dc(size);
if (colors.size() == 1) {
return create_single_filament_bitmap(colors[0], size);
}
// use segment gradient, make transition more natural
wxDC& dc = bdc.dc;
int total_width = size.GetWidth();
int height = size.GetHeight();
// calculate segment count
int segment_count = colors.size() - 1;
double segment_width = (double)total_width / segment_count;
int left = 0;
for (int i = 0; i < segment_count; i++) {
int current_width = (int)segment_width;
// handle last segment, ensure fully filled
if (i == segment_count - 1) {
current_width = total_width - left;
}
// avoid width exceed boundary
if (left + current_width > total_width) {
current_width = total_width - left;
}
if (current_width > 0) {
auto rect = wxRect(left, 0, current_width, height);
dc.GradientFillLinear(rect, colors[i], colors[i + 1], wxEAST);
left += current_width;
}
}
bdc.dc.SelectObject(wxNullBitmap);
return bdc.bitmap;
}
wxBitmap create_filament_bitmap(const std::vector<wxColour>& colors, const wxSize& size, bool force_gradient)
{
if (colors.empty()) return wxNullBitmap;
// Make a copy to sort without modifying original
std::vector<wxColour> sorted_colors = colors;
// Sort colors by HSV when there are 2 or more colors
if (sorted_colors.size() >= 2) {
sort_colors_by_hsv(sorted_colors);
}
if (force_gradient && sorted_colors.size() >= 2) {
return create_gradient_filament_bitmap(sorted_colors, size);
}
switch (sorted_colors.size()) {
case 1: return create_single_filament_bitmap(sorted_colors[0], size);
case 2: return create_dual_filament_bitmap(sorted_colors[0], sorted_colors[1], size);
case 3: return create_triple_filament_bitmap(sorted_colors, size);
case 4: return create_quadruple_filament_bitmap(sorted_colors, size);
default: return create_gradient_filament_bitmap(sorted_colors, size);
}
}
void recompute_mixed_slot_colors(std::vector<wxColour>& colors,
const Slic3r::DynamicPrintConfig& cfg)
{
const auto* is_mixed_opt = cfg.option<ConfigOptionBools>("filament_is_mixed");
const auto* comp_opt = cfg.option<ConfigOptionStrings>("filament_mixed_components");
const auto* ratio_opt = cfg.option<ConfigOptionStrings>("filament_mixed_sublayer_ratios");
const auto* grad_opt = cfg.option<ConfigOptionBools>("filament_mixed_gradient");
if (!is_mixed_opt || !comp_opt) return;
const size_t n = is_mixed_opt->values.size();
if (colors.size() < n) colors.resize(n);
const auto* colour_opt = cfg.option<ConfigOptionStrings>("filament_colour");
const auto kFallback = wxColour(128, 128, 128, 255);
for (size_t i = 0; i < n; ++i) {
if (!is_mixed_opt->values[i]) continue;
if (i >= comp_opt->values.size()) { colors[i] = kFallback; continue; }
auto comp_ids = Slic3r::parse_mixed_components(comp_opt->values[i]);
if (comp_ids.empty()) { colors[i] = kFallback; continue; }
bool is_gradient = grad_opt && i < grad_opt->values.size() && grad_opt->values[i];
std::vector<unsigned int> use_ids = comp_ids;
std::vector<int> weights;
if (is_gradient && comp_ids.size() >= 2) {
use_ids = { comp_ids.front(), comp_ids.back() };
weights = { 5000, 5000 };
} else {
auto ratios_d = Slic3r::parse_mixed_ratios(
(ratio_opt && i < ratio_opt->values.size()) ? ratio_opt->values[i] : std::string{},
comp_ids.size());
weights.reserve(comp_ids.size());
for (double r : ratios_d)
weights.push_back(static_cast<int>(std::lround(r * 10000.0)));
}
std::vector<std::string> hex_colors;
hex_colors.reserve(use_ids.size());
bool any_invalid = false;
for (unsigned int id : use_ids) {
if (id == 0 || id > colors.size()) { any_invalid = true; break; }
wxColour c = colors[id - 1];
if (c.IsOk() && (c.Red() > 0 || c.Green() > 0 || c.Blue() > 0)) {
hex_colors.push_back(to_hex(c));
} else if (colour_opt && (id - 1) < colour_opt->values.size()) {
hex_colors.push_back(colour_opt->values[id - 1]);
} else {
any_invalid = true; break;
}
}
if (any_invalid) { colors[i] = kFallback; continue; }
std::string hex = Slic3r::blend_color_multi(hex_colors, weights);
wxColour blended(hex);
if (!blended.IsOk()) blended = kFallback;
colors[i] = wxColour(blended.Red(), blended.Green(), blended.Blue(), 255);
}
}
namespace {
// Layout ratios of the gradient plot rect, copied from GradientCurveEditor so the read-only
// preview and the interactive editor stay pixel-identical. Plot rect is square 1:1; the
// right/bottom margins host the axis arrows and labels.
constexpr double kPlotLeftRatio = 0.0316;
constexpr double kPlotRightRatio = 0.6766;
constexpr double kPlotTopRatio = 0.1529;
constexpr double kPlotBottomRatio = 0.8474;
constexpr int kGridDivisions = 9; // 10 grid lines including the outer borders.
constexpr int kStrokeAxis = 2; // axis line width (px, no DPI scaling)
constexpr int kAxisArrowHalf = 5; // half-base of the axis arrow triangle (DIP)
constexpr int kAxisArrowLen = 10; // length of the axis arrow triangle (DIP)
constexpr int kPointRadius = 4; // anchor outer radius (DIP)
constexpr float kBgSimilarThreshold = 15.0f;
constexpr int kOutlineExtraDip = 2;
constexpr double kTriangleMarginDip = 20.0;
// Quadratic blend that never goes out of gamut, matching MixedFilamentDialog::blend_colors.
wxColour lerp_blend(const wxColour& a, const wxColour& b, double ratio_a)
{
unsigned char r, g, bl;
Slic3r::filament_mixer_lerp(a.Red(), a.Green(), a.Blue(),
b.Red(), b.Green(), b.Blue(),
static_cast<float>(1.0 - ratio_a), &r, &g, &bl);
return wxColour(r, g, bl);
}
// DIP conversion for these free functions: unlike the wxWindow member FromDIP, it needs the
// window parameter explicitly; nullptr picks the app's default DPI like the Publish dialog does.
int dip_px(int v) { return wxWindow::FromDIP(v, nullptr); }
} // namespace
wxRect mixed_gradient_plot_rect(const wxSize& sz)
{
const int x = static_cast<int>(std::lround(sz.x * kPlotLeftRatio));
const int y = static_cast<int>(std::lround(sz.y * kPlotTopRatio));
const int x2 = static_cast<int>(std::lround(sz.x * kPlotRightRatio));
const int y2 = static_cast<int>(std::lround(sz.y * kPlotBottomRatio));
const int side = std::max(1, std::min(x2 - x, y2 - y));
return wxRect(x, y, side, side);
}
void draw_mixed_gradient_plot(wxDC& raw_dc, const wxSize& canvas,
const std::vector<MixedGradientCurve>& curves,
const std::vector<wxPoint2DDouble>& anchors,
const MixedGradientTheme& theme)
{
// Draw into an internal opaque buffer so wxGCDC text/curves anti-alias against a solid
// background (never a transparent one), then blit the finished image onto the caller's
// buffered paint DC. wxGCDC cannot wrap a generic wxDC&, so the buffer is always a
// wxMemoryDC -- the one type wxGCDC accepts on every platform.
if (canvas.x <= 0 || canvas.y <= 0)
return;
const wxRect rc = mixed_gradient_plot_rect(canvas);
if (rc.width <= 0 || rc.height <= 0)
return;
wxBitmap buf(canvas);
wxMemoryDC memdc(buf);
memdc.SetBackground(wxBrush(theme.background));
memdc.Clear();
wxGCDC dc(memdc);
wxGraphicsContext* gc = dc.GetGraphicsContext();
// 10x10 light grid (10 lines including outer borders, 9 equal divisions).
dc.SetPen(wxPen(theme.grid, 1));
for (int i = 0; i <= kGridDivisions; ++i) {
const int x = rc.x + rc.width * i / kGridDivisions;
const int y = rc.y + rc.height * i / kGridDivisions;
dc.DrawLine(x, rc.y, x, rc.y + rc.height);
dc.DrawLine(rc.x, y, rc.x + rc.width, y);
}
// Set the label font first so text width measurements drive arrow / label placement.
wxFont label_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
label_font.SetPointSize(std::max(7, label_font.GetPointSize() - 1));
dc.SetFont(label_font);
const wxString axis_y_title = _L("Material Ratio");
const wxString axis_x_title = _L("Model Height");
const wxString pct_text = wxT("100%");
const wxSize x_title_sz = dc.GetTextExtent(axis_x_title);
const wxSize y_title_sz = dc.GetTextExtent(axis_y_title);
wxFont strong_font = label_font;
strong_font.SetWeight(wxFONTWEIGHT_SEMIBOLD);
dc.SetFont(strong_font);
const wxSize pct_text_sz = dc.GetTextExtent(pct_text);
dc.SetFont(label_font);
// Axes (grey 700) with filled triangle arrows. Y-axis extends above the plot top to the
// canvas top edge; X-axis extends past the plot right toward the canvas right edge.
const int arrow_half = dip_px(kAxisArrowHalf);
const int arrow_len = dip_px(kAxisArrowLen);
dc.SetPen(wxPen(theme.axis, kStrokeAxis));
dc.SetBrush(wxBrush(theme.axis));
const int y_axis_x = rc.x;
const int y_title_pct_gap = dip_px(1);
const int y_title_bottom_pad = dip_px(2);
const int y_title_y = std::max(0, rc.y - y_title_sz.y - y_title_pct_gap - pct_text_sz.y - y_title_bottom_pad);
const int y_arrow_tip_y = y_title_y;
const int y_arrow_ty = y_arrow_tip_y + arrow_len;
dc.DrawLine(y_axis_x, y_arrow_ty, y_axis_x, rc.y + rc.height);
{
wxPoint tri[3] = {
wxPoint(y_axis_x, y_arrow_tip_y),
wxPoint(y_axis_x - arrow_half, y_arrow_ty),
wxPoint(y_axis_x + arrow_half, y_arrow_ty),
};
dc.DrawPolygon(3, tri);
}
const int x_axis_y = rc.y + rc.height;
const int x_label_gap = dip_px(4);
const int x_edge_pad = dip_px(6);
const int x_arrow_ideal = rc.x + rc.width + dip_px(10);
const int x_arrow_max = canvas.x - x_title_sz.x - x_label_gap - x_edge_pad - arrow_len;
const int x_arrow_tx = std::max(rc.x + rc.width + arrow_len, std::min(x_arrow_ideal, x_arrow_max));
const int x_arrow_tip_x = x_arrow_tx + arrow_len;
const int x_title_x = x_arrow_tip_x + x_label_gap;
dc.DrawLine(rc.x, x_axis_y, x_arrow_tx, x_axis_y);
{
wxPoint tri[3] = {
wxPoint(x_arrow_tip_x, x_axis_y),
wxPoint(x_arrow_tx, x_axis_y - arrow_half),
wxPoint(x_arrow_tx, x_axis_y + arrow_half),
};
dc.DrawPolygon(3, tri);
}
// Labels: "Material Ratio" and the leading "100%" share the same left x; the trailing
// "Model Height" follows the X-axis arrow tip (already clamped to make room).
const int label_left_x = y_axis_x + dip_px(10);
dc.SetTextForeground(theme.label);
dc.DrawText(axis_y_title, label_left_x, y_title_y);
dc.SetFont(strong_font);
dc.SetTextForeground(theme.label_strong);
dc.DrawText(pct_text, label_left_x, y_title_y + y_title_sz.y + y_title_pct_gap);
dc.DrawText(pct_text, rc.x + rc.width - pct_text_sz.x, x_axis_y);
dc.SetFont(label_font);
dc.SetTextForeground(theme.label);
dc.DrawText(axis_x_title, x_title_x, x_axis_y - x_title_sz.y / 2);
if (!gc)
return;
// Outline only when the curve colour is perceptually close to the background; otherwise the
// plain filament colour reads fine and the extra stroke would look heavy.
auto needs_outline = [&](const wxColour& c) {
return calc_color_distance(c, theme.background) < kBgSimilarThreshold;
};
// Only the geometry goes through the graphics context: dc.DrawLines() takes integer wxPoint
// and would quantize the curve back to whole pixels. The pen is still set on the dc, which
// forwards it here while keeping its own cached state in sync for later dc drawing.
auto draw_polyline = [&](const MixedGradientCurve& curve) {
if (curve.points.size() < 2)
return;
dc.SetPen(wxPen(curve.colour, dip_px(curve.stroke_dip)));
gc->StrokeLines(curve.points.size(), curve.points.data());
};
for (const MixedGradientCurve& curve : curves) {
if (needs_outline(curve.colour))
draw_polyline({curve.points, theme.outline, curve.stroke_dip + kOutlineExtraDip});
draw_polyline(curve);
}
// Control points: hollow circle with axis-colour border, theme-aware fill, drawn with a
// sub-pixel centre so the ring stays centred on the curve.
if (!anchors.empty()) {
const double r = dip_px(kPointRadius);
dc.SetPen(wxPen(theme.axis, 1));
dc.SetBrush(wxBrush(theme.point_fill));
for (const wxPoint2DDouble& p : anchors)
gc->DrawEllipse(p.m_x - r, p.m_y - r, r * 2, r * 2);
}
memdc.SelectObject(wxNullBitmap);
raw_dc.DrawBitmap(buf, 0, 0);
}
void draw_mixed_ratio_blend_bar(wxDC& dc, const wxRect& rect, const wxColour& first,
const wxColour& second, double second_fraction)
{
if (rect.width <= 0 || rect.height <= 0)
return;
for (int x = 0; x < rect.width; ++x) {
const double t = rect.width > 1 ? double(x) / rect.width : 0.0;
const wxColour c = lerp_blend(first, second, 1.0 - t);
dc.SetPen(wxPen(c));
dc.DrawLine(rect.x + x, rect.y, rect.x + x, rect.y + rect.height);
}
// Fixed in both themes, like the triangle picker's drag handle: the divider is drawn over
// blended filament colour, so it has to keep its contrast against data rather than chrome.
const int div_x = rect.x + static_cast<int>(second_fraction * rect.width);
dc.SetPen(wxPen(wxColour(80, 80, 80), dip_px(4)));
dc.DrawLine(div_x, rect.y, div_x, rect.y + rect.height);
dc.SetPen(wxPen(*wxWHITE, dip_px(2)));
dc.DrawLine(div_x, rect.y, div_x, rect.y + rect.height);
}
void draw_mixed_ratio_segments(wxDC& dc, const wxRect& rect, const std::vector<wxColour>& colours,
const std::vector<double>& shares)
{
const size_t n = std::min(colours.size(), shares.size());
if (n == 0 || rect.width <= 0 || rect.height <= 0)
return;
std::vector<double> norm = shares;
double total = 0.0;
for (double s : norm)
total += s;
if (total <= 0.0) {
norm.assign(n, 1.0 / n);
total = 1.0;
}
auto share_to_px = [&](double share_sum) { return rect.x + int(std::lround(share_sum / total * double(rect.width))); };
int x0 = rect.x;
std::vector<wxRect> segs(n);
for (size_t i = 0; i < n; ++i) {
int x1 = rect.x + rect.width;
if (i + 1 < n)
x1 = share_to_px(std::accumulate(norm.begin(), norm.begin() + i + 1, 0.0));
segs[i] = wxRect(x0, rect.y, std::max(1, x1 - x0), rect.height);
x0 = segs[i].GetRight() + 1;
}
for (size_t i = 0; i < n; ++i) {
dc.SetPen(*wxTRANSPARENT_PEN);
dc.SetBrush(wxBrush(colours[i]));
dc.DrawRectangle(segs[i]);
}
dc.SetBrush(*wxTRANSPARENT_BRUSH);
dc.SetPen(wxPen(StateColor::darkModeColorFor(wxColour("#ACACAC")), 1));
dc.DrawRectangle(rect);
}
namespace {
struct TriCacheKey
{
int w, h;
int c0r, c0g, c0b, c1r, c1g, c1b, c2r, c2g, c2b;
int bg_r, bg_g, bg_b, ol_r, ol_g, ol_b;
bool operator<(const TriCacheKey& o) const
{
return std::tie(w, h, c0r, c0g, c0b, c1r, c1g, c1b, c2r, c2g, c2b, bg_r, bg_g, bg_b, ol_r, ol_g, ol_b) <
std::tie(o.w, o.h, o.c0r, o.c0g, o.c0b, o.c1r, o.c1g, o.c1b, o.c2r, o.c2g, o.c2b, o.bg_r, o.bg_g, o.bg_b, o.ol_r, o.ol_g, o.ol_b);
}
};
std::map<TriCacheKey, wxBitmap>& tri_cache()
{
static std::map<TriCacheKey, wxBitmap> cache;
return cache;
}
} // namespace
std::array<TriPoint, 3> mixed_triangle_vertices(const wxSize& size, double margin_dip)
{
const double pw = size.GetWidth(), ph = size.GetHeight();
const double margin = dip_px(int(margin_dip));
const double avail = std::min(pw, ph) - 2.0 * margin;
const double side = avail;
const double tri_h = side * std::sqrt(3.0) / 2.0;
const double cx = pw / 2.0;
const double top_y = (ph - tri_h) / 2.0;
return {{{cx, top_y}, {cx - side / 2.0, top_y + tri_h}, {cx + side / 2.0, top_y + tri_h}}};
}
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)
{
if (size.GetWidth() <= 0 || size.GetHeight() <= 0)
return;
const std::array<TriPoint, 3> v = mixed_triangle_vertices(size, kTriangleMarginDip);
dc.SetBrush(wxBrush(theme.background));
dc.SetPen(*wxTRANSPARENT_PEN);
dc.DrawRectangle(0, 0, size.GetWidth(), size.GetHeight());
const wxColour& c0 = colours[0];
const wxColour& c1 = colours[1];
const wxColour& c2 = colours[2];
const TriCacheKey key{size.GetWidth(), size.GetHeight(),
c0.Red(), c0.Green(), c0.Blue(),
c1.Red(), c1.Green(), c1.Blue(),
c2.Red(), c2.Green(), c2.Blue(),
theme.background.Red(), theme.background.Green(), theme.background.Blue(),
theme.outline.Red(), theme.outline.Green(), theme.outline.Blue()};
wxBitmap& bmp = tri_cache()[key];
if (!bmp.IsOk()) {
bmp = wxBitmap(size.GetWidth(), size.GetHeight(), 24);
wxMemoryDC mdc(bmp);
mdc.SetBrush(wxBrush(theme.background));
mdc.SetPen(*wxTRANSPARENT_PEN);
mdc.DrawRectangle(0, 0, size.GetWidth(), size.GetHeight());
const int min_y = int(std::min({v[0].y, v[1].y, v[2].y}));
const int max_y = int(std::max({v[0].y, v[1].y, v[2].y}));
const int min_x = int(std::min({v[0].x, v[1].x, v[2].x}));
const int max_x = int(std::max({v[0].x, v[1].x, v[2].x}));
for (int py = min_y; py <= max_y; ++py) {
for (int px = min_x; px <= max_x; ++px) {
const TriPoint p = {double(px), double(py)};
if (!tri_contains(p, v[0], v[1], v[2]))
continue;
double w0, w1, w2;
tri_barycentric(p, v[0], v[1], v[2], w0, w1, w2);
unsigned char mr, mg, mb;
if (w0 + w1 > 1e-6) {
float t01 = float(w1 / (w0 + w1));
Slic3r::filament_mixer_lerp(c0.Red(), c0.Green(), c0.Blue(), c1.Red(), c1.Green(), c1.Blue(), t01, &mr, &mg, &mb);
Slic3r::filament_mixer_lerp(mr, mg, mb, c2.Red(), c2.Green(), c2.Blue(), float(w2), &mr, &mg, &mb);
} else {
mr = c2.Red(); mg = c2.Green(); mb = c2.Blue();
}
mdc.SetPen(wxPen(wxColour(mr, mg, mb)));
mdc.DrawPoint(px, py);
}
}
mdc.SetPen(wxPen(theme.outline, 1));
mdc.SetBrush(*wxTRANSPARENT_BRUSH);
const wxPoint pts[3] = {{int(v[0].x), int(v[0].y)}, {int(v[1].x), int(v[1].y)}, {int(v[2].x), int(v[2].y)}};
mdc.DrawPolygon(3, pts);
mdc.SelectObject(wxNullBitmap);
// Keep the cache from growing without bound across DPI/size changes.
if (tri_cache().size() > 6) {
auto& cache = tri_cache();
cache.erase(cache.begin());
}
}
dc.DrawBitmap(bmp, 0, 0);
// Published-ratio marker (read-only twin of the editor's drag handle).
const double w0 = weights[0], w1 = weights[1], w2 = weights[2];
const int hx = int(w0 * v[0].x + w1 * v[1].x + w2 * v[2].x);
const int hy = int(w0 * v[0].y + w1 * v[1].y + w2 * v[2].y);
dc.SetBrush(*wxWHITE_BRUSH);
dc.SetPen(wxPen(theme.ring, dip_px(2)));
dc.DrawCircle(hx, hy, dip_px(5));
}
void draw_mixed_triangle_labels(wxDC& dc, const wxSize& size, const std::array<double, 3>& weights,
const MixedTriangleTheme& theme)
{
const std::array<TriPoint, 3> v = mixed_triangle_vertices(size, kTriangleMarginDip);
dc.SetFont(::Label::Body_12);
dc.SetTextForeground(theme.label);
// "Ratio" title, sitting above the top vertex.
const wxString title = _L("Ratio");
dc.DrawText(title, dip_px(2), std::max(0, int(v[0].y - dc.GetTextExtent(title).GetHeight() - dip_px(4))));
for (int i = 0; i < 3; ++i) {
const wxString text = wxString::Format("%d%%", int(std::lround(weights[i] * 100.0)));
const wxSize tsz = dc.GetTextExtent(text);
int lx = int(v[i].x - tsz.GetWidth() / 2.0);
int ly = (i == 0) ? int(v[i].y - tsz.GetHeight() - dip_px(4)) : int(v[i].y + dip_px(3));
ly = std::clamp(ly, 0, size.GetHeight() - tsz.GetHeight());
lx = std::clamp(lx, 0, size.GetWidth() - tsz.GetWidth());
dc.DrawText(text, lx, ly);
}
}
}} // namespace Slic3r::GUI
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