Aegisub/src/dialog_colorpicker.cpp

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// Copyright (c) 2005, Niels Martin Hansen
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
/// @file dialog_colorpicker.cpp
/// @brief Custom colour-selection dialogue box
/// @ingroup tools_ui
///
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#include "config.h"
#include "dialog_colorpicker.h"
#include "ass_style.h"
#include "colorspace.h"
#include "compat.h"
#include "help_button.h"
#include "libresrc/libresrc.h"
#include "options.h"
#include "persist_location.h"
#include "utils.h"
#include <libaegisub/scoped_ptr.h>
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#include <libaegisub/util.h>
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#include <memory>
#include <vector>
#include <wx/bitmap.h>
#include <wx/button.h>
#include <wx/choice.h>
#include <wx/dcclient.h>
#include <wx/dcmemory.h>
#include <wx/dcscreen.h>
#include <wx/dialog.h>
#include <wx/event.h>
#include <wx/gbsizer.h>
#include <wx/image.h>
#include <wx/rawbmp.h>
#include <wx/settings.h>
#include <wx/sizer.h>
#include <wx/spinctrl.h>
#include <wx/statbmp.h>
#include <wx/statbox.h>
#include <wx/stattext.h>
#include <wx/textctrl.h>
#ifdef __WXMAC__
#include <ApplicationServices/ApplicationServices.h>
#endif
namespace {
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enum class PickerDirection {
HorzVert,
Horz,
Vert
};
static const int spectrum_horz_vert_arrow_size = 4;
wxDEFINE_EVENT(EVT_SPECTRUM_CHANGE, wxCommandEvent);
class ColorPickerSpectrum final : public wxControl {
int x;
int y;
wxBitmap *background;
PickerDirection direction;
void OnPaint(wxPaintEvent &evt) {
if (!background) return;
int height = background->GetHeight();
int width = background->GetWidth();
wxPaintDC dc(this);
wxMemoryDC memdc;
memdc.SelectObject(*background);
dc.Blit(1, 1, width, height, &memdc, 0, 0);
wxPoint arrow[3];
wxRect arrow_box;
wxPen invpen(*wxWHITE, 3);
invpen.SetCap(wxCAP_BUTT);
dc.SetLogicalFunction(wxXOR);
dc.SetPen(invpen);
switch (direction) {
case PickerDirection::HorzVert:
// Make a little cross
dc.DrawLine(x-4, y+1, x+7, y+1);
dc.DrawLine(x+1, y-4, x+1, y+7);
break;
case PickerDirection::Horz:
// Make a vertical line stretching all the way across
dc.DrawLine(x+1, 1, x+1, height+1);
// Points for arrow
arrow[0] = wxPoint(x+1, height+2);
arrow[1] = wxPoint(x+1-spectrum_horz_vert_arrow_size, height+2+spectrum_horz_vert_arrow_size);
arrow[2] = wxPoint(x+1+spectrum_horz_vert_arrow_size, height+2+spectrum_horz_vert_arrow_size);
arrow_box.SetLeft(0);
arrow_box.SetTop(height + 2);
arrow_box.SetRight(width + 1 + spectrum_horz_vert_arrow_size);
arrow_box.SetBottom(height + 2 + spectrum_horz_vert_arrow_size);
break;
case PickerDirection::Vert:
// Make a horizontal line stretching all the way across
dc.DrawLine(1, y+1, width+1, y+1);
// Points for arrow
arrow[0] = wxPoint(width+2, y+1);
arrow[1] = wxPoint(width+2+spectrum_horz_vert_arrow_size, y+1-spectrum_horz_vert_arrow_size);
arrow[2] = wxPoint(width+2+spectrum_horz_vert_arrow_size, y+1+spectrum_horz_vert_arrow_size);
arrow_box.SetLeft(width + 2);
arrow_box.SetTop(0);
arrow_box.SetRight(width + 2 + spectrum_horz_vert_arrow_size);
arrow_box.SetBottom(height + 1 + spectrum_horz_vert_arrow_size);
break;
}
if (direction == PickerDirection::Horz || direction == PickerDirection::Vert) {
wxBrush bgBrush;
bgBrush.SetColour(GetBackgroundColour());
dc.SetLogicalFunction(wxCOPY);
dc.SetPen(*wxTRANSPARENT_PEN);
dc.SetBrush(bgBrush);
dc.DrawRectangle(arrow_box);
// Arrow pointing at current point
dc.SetBrush(*wxBLACK_BRUSH);
dc.DrawPolygon(3, arrow);
}
// Border around the spectrum
wxPen blkpen(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT), 1);
blkpen.SetCap(wxCAP_BUTT);
dc.SetLogicalFunction(wxCOPY);
dc.SetPen(blkpen);
dc.SetBrush(*wxTRANSPARENT_BRUSH);
dc.DrawRectangle(0, 0, background->GetWidth()+2, background->GetHeight()+2);
}
void OnMouse(wxMouseEvent &evt) {
evt.Skip();
// We only care about mouse move events during a drag
if (evt.Moving())
return;
if (evt.LeftDown()) {
CaptureMouse();
SetCursor(wxCursor(wxCURSOR_BLANK));
}
else if (evt.LeftUp() && HasCapture()) {
ReleaseMouse();
SetCursor(wxNullCursor);
}
if (evt.LeftDown() || (HasCapture() && evt.LeftIsDown())) {
// Adjust for the 1px black border around the control
int newx = mid(0, evt.GetX() - 1, GetClientSize().x - 3);
int newy = mid(0, evt.GetY() - 1, GetClientSize().y - 3);
SetXY(newx, newy);
wxCommandEvent evt2(EVT_SPECTRUM_CHANGE, GetId());
AddPendingEvent(evt2);
}
}
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bool AcceptsFocusFromKeyboard() const override { return false; }
public:
ColorPickerSpectrum(wxWindow *parent, PickerDirection direction, wxSize size)
: wxControl(parent, -1, wxDefaultPosition, wxDefaultSize, wxBORDER_NONE)
, x(-1)
, y(-1)
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, background(nullptr)
, direction(direction)
{
size.x += 2;
size.y += 2;
if (direction == PickerDirection::Vert) size.x += spectrum_horz_vert_arrow_size + 1;
if (direction == PickerDirection::Horz) size.y += spectrum_horz_vert_arrow_size + 1;
SetClientSize(size);
SetMinSize(GetSize());
Bind(wxEVT_LEFT_DOWN, &ColorPickerSpectrum::OnMouse, this);
Bind(wxEVT_LEFT_UP, &ColorPickerSpectrum::OnMouse, this);
Bind(wxEVT_MOTION, &ColorPickerSpectrum::OnMouse, this);
Bind(wxEVT_PAINT, &ColorPickerSpectrum::OnPaint, this);
}
int GetX() const { return x; }
int GetY() const { return y; }
void SetXY(int xx, int yy) {
if (x != xx || y != yy) {
x = xx;
y = yy;
Refresh(false);
}
}
/// @brief Set the background image for this spectrum
/// @param new_background New background image
/// @param force Repaint even if it appears to be the same image
void SetBackground(wxBitmap *new_background, bool force = false) {
if (background == new_background && !force) return;
background = new_background;
Refresh(false);
}
};
#ifdef WIN32
#define STATIC_BORDER_FLAG wxSTATIC_BORDER
#else
#define STATIC_BORDER_FLAG wxSIMPLE_BORDER
#endif
wxDEFINE_EVENT(EVT_RECENT_SELECT, wxThreadEvent);
/// @class ColorPickerRecent
/// @brief A grid of recently used colors which can be selected by clicking on them
class ColorPickerRecent final : public wxStaticBitmap {
int rows; ///< Number of rows of colors
int cols; ///< Number of cols of colors
int cellsize; ///< Width/Height of each cell
/// The colors currently displayed in the control
std::vector<agi::Color> colors;
void OnClick(wxMouseEvent &evt) {
wxSize cs = GetClientSize();
int cx = evt.GetX() * cols / cs.x;
int cy = evt.GetY() * rows / cs.y;
if (cx < 0 || cx > cols || cy < 0 || cy > rows) return;
int i = cols*cy + cx;
if (i >= 0 && i < (int)colors.size()) {
wxThreadEvent evnt(EVT_RECENT_SELECT, GetId());
evnt.SetPayload(colors[i]);
AddPendingEvent(evnt);
}
}
void UpdateBitmap() {
wxSize sz = GetClientSize();
wxBitmap background(sz.x, sz.y);
wxMemoryDC dc(background);
dc.SetPen(*wxTRANSPARENT_PEN);
for (int cy = 0; cy < rows; cy++) {
for (int cx = 0; cx < cols; cx++) {
int x = cx * cellsize;
int y = cy * cellsize;
dc.SetBrush(wxBrush(to_wx(colors[cy * cols + cx])));
dc.DrawRectangle(x, y, x+cellsize, y+cellsize);
}
}
{
wxEventBlocker blocker(this);
SetBitmap(background);
}
Refresh(false);
}
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bool AcceptsFocusFromKeyboard() const override { return false; }
public:
ColorPickerRecent(wxWindow *parent, int cols, int rows, int cellsize)
: wxStaticBitmap(parent, -1, wxBitmap(), wxDefaultPosition, wxDefaultSize, STATIC_BORDER_FLAG)
, rows(rows)
, cols(cols)
, cellsize(cellsize)
{
colors.resize(rows * cols);
SetClientSize(cols*cellsize, rows*cellsize);
SetMinSize(GetSize());
SetMaxSize(GetSize());
SetCursor(*wxCROSS_CURSOR);
Bind(wxEVT_LEFT_DOWN, &ColorPickerRecent::OnClick, this);
Bind(wxEVT_SIZE, [=](wxSizeEvent&) { UpdateBitmap(); });
}
/// Load the colors to show
void Load(std::vector<agi::Color> const& recent_colors) {
colors = recent_colors;
colors.resize(rows * cols);
UpdateBitmap();
}
/// Get the list of recent colors
std::vector<agi::Color> Save() const { return colors; }
/// Add a color to the beginning of the recent list
void AddColor(agi::Color color) {
auto existing = find(colors.begin(), colors.end(), color);
if (existing != colors.end())
rotate(colors.begin(), existing, existing + 1);
else {
colors.insert(colors.begin(), color);
colors.pop_back();
}
UpdateBitmap();
}
};
wxDEFINE_EVENT(EVT_DROPPER_SELECT, wxThreadEvent);
class ColorPickerScreenDropper final : public wxControl {
wxBitmap capture;
int resx, resy;
int magnification;
void OnMouse(wxMouseEvent &evt) {
int x = evt.GetX();
int y = evt.GetY();
if (x >= 0 && x < capture.GetWidth() && y >= 0 && y < capture.GetHeight()) {
wxNativePixelData pd(capture, wxRect(x, y, 1, 1));
wxNativePixelData::Iterator pdi(pd.GetPixels());
agi::Color color(pdi.Red(), pdi.Green(), pdi.Blue(), 0);
wxThreadEvent evnt(EVT_DROPPER_SELECT, GetId());
evnt.SetPayload(color);
AddPendingEvent(evnt);
}
}
void OnPaint(wxPaintEvent &evt) {
wxPaintDC(this).DrawBitmap(capture, 0, 0);
}
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bool AcceptsFocusFromKeyboard() const override { return false; }
public:
ColorPickerScreenDropper(wxWindow *parent, int resx, int resy, int magnification)
: wxControl(parent, -1, wxDefaultPosition, wxDefaultSize, STATIC_BORDER_FLAG)
, capture(resx * magnification, resy * magnification, wxNativePixelFormat::BitsPerPixel)
, resx(resx)
, resy(resy)
, magnification(magnification)
{
SetClientSize(resx*magnification, resy*magnification);
SetMinSize(GetSize());
SetMaxSize(GetSize());
SetCursor(*wxCROSS_CURSOR);
wxMemoryDC capdc(capture);
capdc.SetPen(*wxTRANSPARENT_PEN);
capdc.SetBrush(*wxWHITE_BRUSH);
capdc.DrawRectangle(0, 0, capture.GetWidth(), capture.GetHeight());
Bind(wxEVT_PAINT, &ColorPickerScreenDropper::OnPaint, this);
Bind(wxEVT_LEFT_DOWN, &ColorPickerScreenDropper::OnMouse, this);
}
void DropFromScreenXY(int x, int y);
};
void ColorPickerScreenDropper::DropFromScreenXY(int x, int y) {
wxMemoryDC capdc(capture);
capdc.SetPen(*wxTRANSPARENT_PEN);
#ifndef __WXMAC__
wxScreenDC screen;
capdc.StretchBlit(0, 0, resx * magnification, resy * magnification,
&screen, x - resx / 2, y - resy / 2, resx, resy);
#else
// wxScreenDC doesn't work on recent versions of OS X so do it manually
// Doesn't bother handling the case where the rect overlaps two monitors
CGDirectDisplayID display_id;
uint32_t display_count;
CGGetDisplaysWithPoint(CGPointMake(x, y), 1, &display_id, &display_count);
agi::scoped_holder<CGImageRef> img(CGDisplayCreateImageForRect(display_id, CGRectMake(x - resx / 2, y - resy / 2, resx, resy)), CGImageRelease);
NSUInteger width = CGImageGetWidth(img);
NSUInteger height = CGImageGetHeight(img);
std::vector<uint8_t> imgdata(height * width * 4);
agi::scoped_holder<CGColorSpaceRef> colorspace(CGColorSpaceCreateDeviceRGB(), CGColorSpaceRelease);
agi::scoped_holder<CGContextRef> bmp_context(CGBitmapContextCreate(&imgdata[0], width, height, 8, 4 * width, colorspace, kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big), CGContextRelease);
CGContextDrawImage(bmp_context, CGRectMake(0, 0, width, height), img);
for (int x = 0; x < resx; x++) {
for (int y = 0; y < resy; y++) {
uint8_t *pixel = &imgdata[y * width * 4 + x * 4];
capdc.SetBrush(wxBrush(wxColour(pixel[0], pixel[1], pixel[2])));
capdc.DrawRectangle(x * magnification, y * magnification, magnification, magnification);
}
}
#endif
Refresh(false);
}
class DialogColorPicker final : public wxDialog {
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std::unique_ptr<PersistLocation> persist;
agi::Color cur_color; ///< Currently selected colour
bool spectrum_dirty; ///< Does the spectrum image need to be regenerated?
ColorPickerSpectrum *spectrum; ///< The 2D color spectrum
ColorPickerSpectrum *slider; ///< The 1D slider for the color component not in the slider
ColorPickerSpectrum *alpha_slider;
wxChoice *colorspace_choice; ///< The dropdown list to select colorspaces
wxSpinCtrl *rgb_input[3];
wxBitmap rgb_spectrum[3]; ///< x/y spectrum bitmap where color "i" is excluded from
wxBitmap rgb_slider[3]; ///< z spectrum for color "i"
wxSpinCtrl *hsl_input[3];
wxBitmap hsl_spectrum; ///< h/s spectrum
wxBitmap hsl_slider; ///< l spectrum
wxSpinCtrl *hsv_input[3];
wxBitmap hsv_spectrum; ///< s/v spectrum
wxBitmap hsv_slider; ///< h spectrum
wxBitmap alpha_slider_img;
wxTextCtrl *ass_input;
wxTextCtrl *html_input;
wxSpinCtrl *alpha_input;
/// The eyedropper is set to a blank icon when it's clicked, so store its normal bitmap
wxBitmap eyedropper_bitmap;
/// The point where the eyedropper was click, used to make it possible to either
/// click the eyedropper or drag the eyedropper
wxPoint eyedropper_grab_point;
bool eyedropper_is_grabbed;
wxStaticBitmap *preview_box; ///< A box which simply shows the current color
ColorPickerRecent *recent_box; ///< A grid of recently used colors
ColorPickerScreenDropper *screen_dropper;
wxStaticBitmap *screen_dropper_icon;
/// Update all other controls as a result of modifying an RGB control
void UpdateFromRGB(bool dirty = true);
/// Update all other controls as a result of modifying an HSL control
void UpdateFromHSL(bool dirty = true);
/// Update all other controls as a result of modifying an HSV control
void UpdateFromHSV(bool dirty = true);
/// Update all other controls as a result of modifying the ASS format control
void UpdateFromAss();
/// Update all other controls as a result of modifying the HTML format control
void UpdateFromHTML();
void UpdateFromAlpha();
void SetRGB(agi::Color new_color);
void SetHSL(unsigned char r, unsigned char g, unsigned char b);
void SetHSV(unsigned char r, unsigned char g, unsigned char b);
/// Redraw the spectrum display
void UpdateSpectrumDisplay();
wxBitmap *MakeGBSpectrum();
wxBitmap *MakeRBSpectrum();
wxBitmap *MakeRGSpectrum();
wxBitmap *MakeHSSpectrum();
wxBitmap *MakeSVSpectrum();
/// Constructor helper function for making the color input box sizers
template<int N, class Control>
wxSizer *MakeColorInputSizer(wxString (&labels)[N], Control *(&inputs)[N]);
void OnChangeMode(wxCommandEvent &evt);
void OnSpectrumChange(wxCommandEvent &evt);
void OnSliderChange(wxCommandEvent &evt);
void OnAlphaSliderChange(wxCommandEvent &evt);
void OnRecentSelect(wxThreadEvent &evt); // also handles dropper pick
void OnDropperMouse(wxMouseEvent &evt);
void OnMouse(wxMouseEvent &evt);
void OnCaptureLost(wxMouseCaptureLostEvent&);
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std::function<void (agi::Color)> callback;
public:
DialogColorPicker(wxWindow *parent, agi::Color initial_color, std::function<void (agi::Color)> callback, bool alpha);
~DialogColorPicker();
void SetColor(agi::Color new_color);
void AddColorToRecent();
};
static const int slider_width = 10; ///< width in pixels of the color slider control
static const int alpha_box_size = 5;
template<typename Func>
static wxBitmap make_slider_img(Func func) {
unsigned char *slid = (unsigned char *)calloc(slider_width * 256 * 3, 1);
func(slid);
wxImage img(slider_width, 256, slid);
return wxBitmap(img);
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}
template<typename Func>
static wxBitmap make_slider(Func func) {
return make_slider_img([&](unsigned char *slid) {
for (int y = 0; y < 256; ++y) {
unsigned char rgb[3];
func(y, rgb);
for (int x = 0; x < slider_width; ++x)
memcpy(slid + y * slider_width * 3 + x * 3, rgb, 3);
}
});
}
DialogColorPicker::DialogColorPicker(wxWindow *parent, agi::Color initial_color, std::function<void (agi::Color)> callback, bool alpha)
: wxDialog(parent, -1, _("Select Color"))
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, callback(std::move(callback))
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{
// generate spectrum slider bar images
for (int i = 0; i < 3; ++i) {
rgb_slider[i] = make_slider([=](int y, unsigned char *rgb) {
memset(rgb, 0, 3);
rgb[i] = y;
});
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}
hsl_slider = make_slider([](int y, unsigned char *rgb) { memset(rgb, y, 3); });
hsv_slider = make_slider([](int y, unsigned char *rgb) { hsv_to_rgb(y, 255, 255, rgb, rgb + 1, rgb + 2); });
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// Create the controls for the dialog
wxSizer *spectrum_box = new wxStaticBoxSizer(wxVERTICAL, this, _("Color spectrum"));
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spectrum = new ColorPickerSpectrum(this, PickerDirection::HorzVert, wxSize(256, 256));
slider = new ColorPickerSpectrum(this, PickerDirection::Vert, wxSize(slider_width, 256));
alpha_slider = new ColorPickerSpectrum(this, PickerDirection::Vert, wxSize(slider_width, 256));
wxString modes[] = { _("RGB/R"), _("RGB/G"), _("RGB/B"), _("HSL/L"), _("HSV/H") };
colorspace_choice = new wxChoice(this, -1, wxDefaultPosition, wxDefaultSize, 5, modes);
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wxSize colorinput_size = GetTextExtent(" &H10117B& ");
colorinput_size.SetHeight(-1);
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wxSize colorinput_labelsize(40, -1);
wxSizer *rgb_box = new wxStaticBoxSizer(wxHORIZONTAL, this, _("RGB color"));
wxSizer *hsl_box = new wxStaticBoxSizer(wxVERTICAL, this, _("HSL color"));
wxSizer *hsv_box = new wxStaticBoxSizer(wxVERTICAL, this, _("HSV color"));
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for (auto& elem : rgb_input)
elem = new wxSpinCtrl(this, -1, "", wxDefaultPosition, colorinput_size, wxSP_ARROW_KEYS, 0, 255);
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ass_input = new wxTextCtrl(this, -1, "", wxDefaultPosition, colorinput_size);
html_input = new wxTextCtrl(this, -1, "", wxDefaultPosition, colorinput_size);
alpha_input = new wxSpinCtrl(this, -1, "", wxDefaultPosition, colorinput_size, wxSP_ARROW_KEYS, 0, 255);
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for (auto& elem : hsl_input)
elem = new wxSpinCtrl(this, -1, "", wxDefaultPosition, colorinput_size, wxSP_ARROW_KEYS, 0, 255);
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for (auto& elem : hsv_input)
elem = new wxSpinCtrl(this, -1, "", wxDefaultPosition, colorinput_size, wxSP_ARROW_KEYS, 0, 255);
preview_box = new wxStaticBitmap(this, -1, wxBitmap(40, 40, 24), wxDefaultPosition, wxSize(40, 40), STATIC_BORDER_FLAG);
recent_box = new ColorPickerRecent(this, 8, 4, 16);
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eyedropper_bitmap = GETIMAGE(eyedropper_tool_24);
eyedropper_bitmap.SetMask(new wxMask(eyedropper_bitmap, wxColour(255, 0, 255)));
screen_dropper_icon = new wxStaticBitmap(this, -1, eyedropper_bitmap, wxDefaultPosition, wxDefaultSize, wxRAISED_BORDER);
screen_dropper = new ColorPickerScreenDropper(this, 7, 7, 8);
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// Arrange the controls in a nice way
wxSizer *spectop_sizer = new wxBoxSizer(wxHORIZONTAL);
spectop_sizer->Add(new wxStaticText(this, -1, _("Spectrum mode:")), 0, wxALIGN_CENTER_VERTICAL|wxALIGN_LEFT|wxRIGHT, 5);
spectop_sizer->Add(colorspace_choice, 0, wxALIGN_CENTER_VERTICAL|wxALIGN_LEFT);
spectop_sizer->Add(5, 5, 1, wxEXPAND);
spectop_sizer->Add(preview_box, 0, wxALIGN_CENTER_VERTICAL|wxALIGN_RIGHT);
wxSizer *spectrum_sizer = new wxFlexGridSizer(3, 5, 5);
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spectrum_sizer->Add(spectop_sizer, wxEXPAND);
spectrum_sizer->AddStretchSpacer(1);
spectrum_sizer->AddStretchSpacer(1);
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spectrum_sizer->Add(spectrum);
spectrum_sizer->Add(slider);
spectrum_sizer->Add(alpha_slider);
if (!alpha)
spectrum_sizer->Hide(alpha_slider);
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spectrum_box->Add(spectrum_sizer, 0, wxALL, 3);
wxString rgb_labels[] = { _("Red:"), _("Green:"), _("Blue:") };
rgb_box->Add(MakeColorInputSizer(rgb_labels, rgb_input), 1, wxALL|wxEXPAND, 3);
wxString ass_labels[] = { "ASS:", "HTML:", _("Alpha:") };
wxControl *ass_ctrls[] = { ass_input, html_input, alpha_input };
auto ass_colors_sizer = MakeColorInputSizer(ass_labels, ass_ctrls);
if (!alpha)
ass_colors_sizer->Hide(alpha_input);
rgb_box->Add(ass_colors_sizer, 0, wxALL|wxCENTER|wxEXPAND, 3);
wxString hsl_labels[] = { _("Hue:"), _("Sat.:"), _("Lum.:") };
hsl_box->Add(MakeColorInputSizer(hsl_labels, hsl_input), 0, wxALL|wxEXPAND, 3);
wxString hsv_labels[] = { _("Hue:"), _("Sat.:"), _("Value:") };
hsv_box->Add(MakeColorInputSizer(hsv_labels, hsv_input), 0, wxALL|wxEXPAND, 3);
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wxSizer *hsx_sizer = new wxBoxSizer(wxHORIZONTAL);
hsx_sizer->Add(hsl_box);
hsx_sizer->AddSpacer(5);
hsx_sizer->Add(hsv_box);
wxSizer *picker_sizer = new wxBoxSizer(wxHORIZONTAL);
picker_sizer->AddStretchSpacer();
picker_sizer->Add(screen_dropper_icon, 0, wxALIGN_CENTER|wxRIGHT, 5);
picker_sizer->Add(screen_dropper, 0, wxALIGN_CENTER);
picker_sizer->AddStretchSpacer();
picker_sizer->Add(recent_box, 0, wxALIGN_CENTER);
picker_sizer->AddStretchSpacer();
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wxStdDialogButtonSizer *button_sizer = CreateStdDialogButtonSizer(wxOK | wxCANCEL | wxHELP);
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wxSizer *input_sizer = new wxBoxSizer(wxVERTICAL);
input_sizer->Add(rgb_box, 0, wxALIGN_CENTER|wxEXPAND);
input_sizer->AddSpacer(5);
input_sizer->Add(hsx_sizer, 0, wxALIGN_CENTER|wxEXPAND);
input_sizer->AddStretchSpacer(1);
input_sizer->Add(picker_sizer, 0, wxALIGN_CENTER|wxEXPAND);
input_sizer->AddStretchSpacer(2);
input_sizer->Add(button_sizer, 0, wxALIGN_RIGHT|wxALIGN_BOTTOM);
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wxSizer *main_sizer = new wxBoxSizer(wxHORIZONTAL);
main_sizer->Add(spectrum_box, 1, wxALL | wxEXPAND, 5);
main_sizer->Add(input_sizer, 0, (wxALL&~wxLEFT)|wxEXPAND, 5);
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SetSizerAndFit(main_sizer);
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persist = agi::util::make_unique<PersistLocation>(this, "Tool/Colour Picker");
// Fill the controls
int mode = OPT_GET("Tool/Colour Picker/Mode")->GetInt();
if (mode < 0 || mode > 4) mode = 3; // HSL default
colorspace_choice->SetSelection(mode);
SetColor(initial_color);
recent_box->Load(OPT_GET("Tool/Colour Picker/Recent Colours")->GetListColor());
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using std::bind;
for (int i = 0; i < 3; ++i) {
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rgb_input[i]->Bind(wxEVT_SPINCTRL, bind(&DialogColorPicker::UpdateFromRGB, this, true));
rgb_input[i]->Bind(wxEVT_TEXT, bind(&DialogColorPicker::UpdateFromRGB, this, true));
hsl_input[i]->Bind(wxEVT_SPINCTRL, bind(&DialogColorPicker::UpdateFromHSL, this, true));
hsl_input[i]->Bind(wxEVT_TEXT, bind(&DialogColorPicker::UpdateFromHSL, this, true));
hsv_input[i]->Bind(wxEVT_SPINCTRL, bind(&DialogColorPicker::UpdateFromHSV, this, true));
hsv_input[i]->Bind(wxEVT_TEXT, bind(&DialogColorPicker::UpdateFromHSV, this, true));
}
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ass_input->Bind(wxEVT_TEXT, bind(&DialogColorPicker::UpdateFromAss, this));
html_input->Bind(wxEVT_TEXT, bind(&DialogColorPicker::UpdateFromHTML, this));
alpha_input->Bind(wxEVT_SPINCTRL, bind(&DialogColorPicker::UpdateFromAlpha, this));
alpha_input->Bind(wxEVT_TEXT, bind(&DialogColorPicker::UpdateFromAlpha, this));
screen_dropper_icon->Bind(wxEVT_MOTION, &DialogColorPicker::OnDropperMouse, this);
screen_dropper_icon->Bind(wxEVT_LEFT_DOWN, &DialogColorPicker::OnDropperMouse, this);
screen_dropper_icon->Bind(wxEVT_LEFT_UP, &DialogColorPicker::OnDropperMouse, this);
screen_dropper_icon->Bind(wxEVT_MOUSE_CAPTURE_LOST, &DialogColorPicker::OnCaptureLost, this);
Bind(wxEVT_MOTION, &DialogColorPicker::OnMouse, this);
Bind(wxEVT_LEFT_DOWN, &DialogColorPicker::OnMouse, this);
Bind(wxEVT_LEFT_UP, &DialogColorPicker::OnMouse, this);
spectrum->Bind(EVT_SPECTRUM_CHANGE, &DialogColorPicker::OnSpectrumChange, this);
slider->Bind(EVT_SPECTRUM_CHANGE, &DialogColorPicker::OnSliderChange, this);
alpha_slider->Bind(EVT_SPECTRUM_CHANGE, &DialogColorPicker::OnAlphaSliderChange, this);
recent_box->Bind(EVT_RECENT_SELECT, &DialogColorPicker::OnRecentSelect, this);
screen_dropper->Bind(EVT_DROPPER_SELECT, &DialogColorPicker::OnRecentSelect, this);
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colorspace_choice->Bind(wxEVT_CHOICE, &DialogColorPicker::OnChangeMode, this);
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button_sizer->GetHelpButton()->Bind(wxEVT_BUTTON, bind(&HelpButton::OpenPage, "Colour Picker"));
}
template<int N, class Control>
wxSizer *DialogColorPicker::MakeColorInputSizer(wxString (&labels)[N], Control *(&inputs)[N]) {
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auto sizer = new wxFlexGridSizer(2, 5, 5);
for (int i = 0; i < N; ++i) {
sizer->Add(new wxStaticText(this, -1, labels[i]), wxSizerFlags(1).Center().Left());
sizer->Add(inputs[i]);
}
sizer->AddGrowableCol(0,1);
return sizer;
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}
DialogColorPicker::~DialogColorPicker() {
if (screen_dropper_icon->HasCapture()) screen_dropper_icon->ReleaseMouse();
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}
static void change_value(wxSpinCtrl *ctrl, int value) {
wxEventBlocker blocker(ctrl);
ctrl->SetValue(value);
}
void DialogColorPicker::SetColor(agi::Color new_color) {
change_value(alpha_input, new_color.a);
alpha_slider->SetXY(0, new_color.a);
cur_color.a = new_color.a;
SetRGB(new_color);
spectrum_dirty = true;
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UpdateFromRGB();
}
void DialogColorPicker::AddColorToRecent() {
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recent_box->AddColor(cur_color);
OPT_SET("Tool/Colour Picker/Recent Colours")->SetListColor(recent_box->Save());
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}
void DialogColorPicker::SetRGB(agi::Color new_color) {
change_value(rgb_input[0], new_color.r);
change_value(rgb_input[1], new_color.g);
change_value(rgb_input[2], new_color.b);
new_color.a = cur_color.a;
cur_color = new_color;
}
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void DialogColorPicker::SetHSL(unsigned char r, unsigned char g, unsigned char b) {
unsigned char h, s, l;
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rgb_to_hsl(r, g, b, &h, &s, &l);
change_value(hsl_input[0], h);
change_value(hsl_input[1], s);
change_value(hsl_input[2], l);
}
void DialogColorPicker::SetHSV(unsigned char r, unsigned char g, unsigned char b) {
unsigned char h, s, v;
rgb_to_hsv(r, g, b, &h, &s, &v);
change_value(hsv_input[0], h);
change_value(hsv_input[1], s);
change_value(hsv_input[2], v);
}
void DialogColorPicker::UpdateFromRGB(bool dirty) {
unsigned char r = rgb_input[0]->GetValue();
unsigned char g = rgb_input[1]->GetValue();
unsigned char b = rgb_input[2]->GetValue();
SetHSL(r, g, b);
SetHSV(r, g, b);
cur_color = agi::Color(r, g, b, cur_color.a);
ass_input->ChangeValue(to_wx(cur_color.GetAssOverrideFormatted()));
html_input->ChangeValue(to_wx(cur_color.GetHexFormatted()));
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if (dirty)
spectrum_dirty = true;
UpdateSpectrumDisplay();
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}
void DialogColorPicker::UpdateFromHSL(bool dirty) {
unsigned char r, g, b, h, s, l;
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h = hsl_input[0]->GetValue();
s = hsl_input[1]->GetValue();
l = hsl_input[2]->GetValue();
hsl_to_rgb(h, s, l, &r, &g, &b);
SetRGB(agi::Color(r, g, b));
SetHSV(r, g, b);
ass_input->ChangeValue(to_wx(cur_color.GetAssOverrideFormatted()));
html_input->ChangeValue(to_wx(cur_color.GetHexFormatted()));
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if (dirty)
spectrum_dirty = true;
UpdateSpectrumDisplay();
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}
void DialogColorPicker::UpdateFromHSV(bool dirty) {
unsigned char r, g, b, h, s, v;
h = hsv_input[0]->GetValue();
s = hsv_input[1]->GetValue();
v = hsv_input[2]->GetValue();
hsv_to_rgb(h, s, v, &r, &g, &b);
SetRGB(agi::Color(r, g, b));
SetHSL(r, g, b);
ass_input->ChangeValue(to_wx(cur_color.GetAssOverrideFormatted()));
html_input->ChangeValue(to_wx(cur_color.GetHexFormatted()));
if (dirty)
spectrum_dirty = true;
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UpdateSpectrumDisplay();
}
void DialogColorPicker::UpdateFromAss() {
agi::Color color(from_wx(ass_input->GetValue()));
SetRGB(color);
SetHSL(color.r, color.g, color.b);
SetHSV(color.r, color.g, color.b);
html_input->ChangeValue(to_wx(cur_color.GetHexFormatted()));
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spectrum_dirty = true;
UpdateSpectrumDisplay();
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}
void DialogColorPicker::UpdateFromHTML() {
agi::Color color(from_wx(html_input->GetValue()));
SetRGB(color);
SetHSL(color.r, color.g, color.b);
SetHSV(color.r, color.g, color.b);
ass_input->ChangeValue(to_wx(cur_color.GetAssOverrideFormatted()));
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spectrum_dirty = true;
UpdateSpectrumDisplay();
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}
void DialogColorPicker::UpdateFromAlpha() {
cur_color.a = alpha_input->GetValue();
alpha_slider->SetXY(0, cur_color.a);
callback(cur_color);
}
void DialogColorPicker::UpdateSpectrumDisplay() {
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int i = colorspace_choice->GetSelection();
if (spectrum_dirty) {
switch (i) {
case 0: spectrum->SetBackground(MakeGBSpectrum(), true); break;
case 1: spectrum->SetBackground(MakeRBSpectrum(), true); break;
case 2: spectrum->SetBackground(MakeRGSpectrum(), true); break;
case 3: spectrum->SetBackground(MakeHSSpectrum(), true); break;
case 4: spectrum->SetBackground(MakeSVSpectrum(), true); break;
}
}
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switch (i) {
case 0: case 1: case 2:
slider->SetBackground(&rgb_slider[i]);
slider->SetXY(0, rgb_input[i]->GetValue());
spectrum->SetXY(rgb_input[2 - (i == 2)]->GetValue(), rgb_input[1 == 0]->GetValue());
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break;
case 3:
slider->SetBackground(&hsl_slider);
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slider->SetXY(0, hsl_input[2]->GetValue());
spectrum->SetXY(hsl_input[1]->GetValue(), hsl_input[0]->GetValue());
break;
case 4:
slider->SetBackground(&hsv_slider);
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slider->SetXY(0, hsv_input[0]->GetValue());
spectrum->SetXY(hsv_input[1]->GetValue(), hsv_input[2]->GetValue());
break;
}
spectrum_dirty = false;
wxBitmap tempBmp = preview_box->GetBitmap();
{
wxMemoryDC previewdc;
previewdc.SelectObject(tempBmp);
previewdc.SetPen(*wxTRANSPARENT_PEN);
previewdc.SetBrush(wxBrush(to_wx(cur_color)));
previewdc.DrawRectangle(0, 0, 40, 40);
}
preview_box->SetBitmap(tempBmp);
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alpha_slider_img = make_slider_img([=](unsigned char *slid) {
static_assert(slider_width % alpha_box_size == 0, "Slider width must be a multiple of alpha box width");
for (int y = 0; y < 256; ++y) {
unsigned char inv_y = 0xFF - y;
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unsigned char box_colors[] = {
static_cast<unsigned char>(0x66 - inv_y * 0x66 / 0xFF),
static_cast<unsigned char>(0x99 - inv_y * 0x99 / 0xFF)
};
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if ((y / alpha_box_size) & 1)
std::swap(box_colors[0], box_colors[1]);
unsigned char colors[2][3];
for (int i = 0; i < 2; ++i) {
colors[i][0] = cur_color.r * inv_y / 0xFF + box_colors[i];
colors[i][1] = cur_color.g * inv_y / 0xFF + box_colors[i];
colors[i][2] = cur_color.b * inv_y / 0xFF + box_colors[i];
}
for (int x = 0; x < slider_width; ++x) {
*slid++ = colors[x / alpha_box_size][0];
*slid++ = colors[x / alpha_box_size][1];
*slid++ = colors[x / alpha_box_size][2];
}
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}
});
alpha_slider->SetBackground(&alpha_slider_img, true);
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callback(cur_color);
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}
template<typename Func>
static wxBitmap *make_spectrum(wxBitmap *bitmap, Func func) {
wxImage spectrum_image(256, 256);
func(spectrum_image.GetData());
*bitmap = wxBitmap(spectrum_image);
return bitmap;
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}
wxBitmap *DialogColorPicker::MakeGBSpectrum() {
return make_spectrum(&rgb_spectrum[0], [=](unsigned char *spec) {
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for (int g = 0; g < 256; g++) {
for (int b = 0; b < 256; b++) {
*spec++ = cur_color.r;
*spec++ = g;
*spec++ = b;
}
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}
});
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}
wxBitmap *DialogColorPicker::MakeRBSpectrum() {
return make_spectrum(&rgb_spectrum[1], [=](unsigned char *spec) {
for (int r = 0; r < 256; r++) {
for (int b = 0; b < 256; b++) {
*spec++ = r;
*spec++ = cur_color.g;
*spec++ = b;
}
}
});
}
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wxBitmap *DialogColorPicker::MakeRGSpectrum() {
return make_spectrum(&rgb_spectrum[2], [=](unsigned char *spec) {
for (int r = 0; r < 256; r++) {
for (int g = 0; g < 256; g++) {
*spec++ = r;
*spec++ = g;
*spec++ = cur_color.b;
}
}
});
}
wxBitmap *DialogColorPicker::MakeHSSpectrum() {
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int l = hsl_input[2]->GetValue();
return make_spectrum(&hsl_spectrum, [=](unsigned char *spec) {
for (int h = 0; h < 256; h++) {
unsigned char maxr, maxg, maxb;
hsl_to_rgb(h, 255, l, &maxr, &maxg, &maxb);
for (int s = 0; s < 256; s++) {
*spec++ = maxr * s / 256 + (255-s) * l / 256;
*spec++ = maxg * s / 256 + (255-s) * l / 256;
*spec++ = maxb * s / 256 + (255-s) * l / 256;
}
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}
});
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}
wxBitmap *DialogColorPicker::MakeSVSpectrum() {
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int h = hsv_input[0]->GetValue();
unsigned char maxr, maxg, maxb;
hsv_to_rgb(h, 255, 255, &maxr, &maxg, &maxb);
return make_spectrum(&hsv_spectrum, [=](unsigned char *spec) {
for (int v = 0; v < 256; v++) {
int rr = (255-maxr) * v / 256;
int rg = (255-maxg) * v / 256;
int rb = (255-maxb) * v / 256;
for (int s = 0; s < 256; s++) {
*spec++ = 255 - rr * s / 256 - (255-v);
*spec++ = 255 - rg * s / 256 - (255-v);
*spec++ = 255 - rb * s / 256 - (255-v);
}
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}
});
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}
void DialogColorPicker::OnChangeMode(wxCommandEvent &) {
spectrum_dirty = true;
OPT_SET("Tool/Colour Picker/Mode")->SetInt(colorspace_choice->GetSelection());
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UpdateSpectrumDisplay();
}
void DialogColorPicker::OnSpectrumChange(wxCommandEvent &) {
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int i = colorspace_choice->GetSelection();
switch (i) {
case 0: case 1: case 2:
change_value(rgb_input[2 - (i == 2)], spectrum->GetX());
change_value(rgb_input[i == 0], spectrum->GetY());
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break;
case 3:
change_value(hsl_input[1], spectrum->GetX());
change_value(hsl_input[0], spectrum->GetY());
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break;
case 4:
change_value(hsv_input[1], spectrum->GetX());
change_value(hsv_input[2], spectrum->GetY());
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break;
}
switch (i) {
case 0: case 1: case 2:
UpdateFromRGB(false);
break;
case 3:
UpdateFromHSL(false);
break;
case 4:
UpdateFromHSV(false);
break;
}
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}
void DialogColorPicker::OnSliderChange(wxCommandEvent &) {
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spectrum_dirty = true;
int i = colorspace_choice->GetSelection();
switch (i) {
case 0: case 1: case 2:
change_value(rgb_input[i], slider->GetY());
UpdateFromRGB(false);
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break;
case 3:
change_value(hsl_input[2], slider->GetY());
UpdateFromHSL(false);
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break;
case 4:
change_value(hsv_input[0], slider->GetY());
UpdateFromHSV(false);
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break;
}
}
void DialogColorPicker::OnAlphaSliderChange(wxCommandEvent &) {
change_value(alpha_input, alpha_slider->GetY());
cur_color.a = alpha_slider->GetY();
callback(cur_color);
}
void DialogColorPicker::OnRecentSelect(wxThreadEvent &evt) {
agi::Color new_color = evt.GetPayload<agi::Color>();
new_color.a = cur_color.a;
SetColor(new_color);
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}
void DialogColorPicker::OnDropperMouse(wxMouseEvent &evt) {
if (evt.LeftDown() && !screen_dropper_icon->HasCapture()) {
#ifdef WIN32
screen_dropper_icon->SetCursor(wxCursor("eyedropper_cursor"));
#else
screen_dropper_icon->SetCursor(*wxCROSS_CURSOR);
#endif
screen_dropper_icon->SetBitmap(wxNullBitmap);
screen_dropper_icon->CaptureMouse();
eyedropper_grab_point = evt.GetPosition();
eyedropper_is_grabbed = false;
}
if (evt.LeftUp()) {
wxPoint ptdiff = evt.GetPosition() - eyedropper_grab_point;
bool release_now = eyedropper_is_grabbed || abs(ptdiff.x) + abs(ptdiff.y) > 7;
if (release_now) {
screen_dropper_icon->ReleaseMouse();
eyedropper_is_grabbed = false;
screen_dropper_icon->SetCursor(wxNullCursor);
screen_dropper_icon->SetBitmap(eyedropper_bitmap);
}
else
eyedropper_is_grabbed = true;
}
if (screen_dropper_icon->HasCapture()) {
wxPoint scrpos = screen_dropper_icon->ClientToScreen(evt.GetPosition());
screen_dropper->DropFromScreenXY(scrpos.x, scrpos.y);
}
}
/// @brief Hack to redirect events to the screen dropper icon
void DialogColorPicker::OnMouse(wxMouseEvent &evt) {
if (!screen_dropper_icon->HasCapture()) {
evt.Skip();
return;
}
wxPoint dropper_pos = screen_dropper_icon->ScreenToClient(ClientToScreen(evt.GetPosition()));
evt.m_x = dropper_pos.x;
evt.m_y = dropper_pos.y;
screen_dropper_icon->GetEventHandler()->ProcessEvent(evt);
}
void DialogColorPicker::OnCaptureLost(wxMouseCaptureLostEvent&) {
eyedropper_is_grabbed = false;
screen_dropper_icon->SetCursor(wxNullCursor);
screen_dropper_icon->SetBitmap(eyedropper_bitmap);
}
}
bool GetColorFromUser(wxWindow* parent, agi::Color original, bool alpha, std::function<void (agi::Color)> callback) {
DialogColorPicker dialog(parent, original, callback, alpha);
bool ok = dialog.ShowModal() == wxID_OK;
if (!ok)
callback(original);
else
dialog.AddColorToRecent();
return ok;
}