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Factor out some duplicated code in the color picker slider generation

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This commit is contained in:
Thomas Goyne 2013-01-28 07:15:44 -08:00
parent 2113ed9580
commit 2e99223977
1 changed files with 19 additions and 21 deletions
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40
aegisub/src/dialog_colorpicker.cpp
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@ -525,40 +525,38 @@ static const int slider_width = 10; ///< width in pixels of the color slider con
static const int alpha_box_size = 5;
template<typename Func>
static wxBitmap make_slider(Func 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);
}
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"))
, callback(callback)
{
// generate spectrum slider bar images
for (int i = 0; i < 3; ++i) {
rgb_slider[i] = make_slider([=](unsigned char *slid) {
for (int y = 0; y < 256; y++) {
for (int x = 0; x < slider_width; x++)
slid[y * slider_width + x * 3 + i] = y;
}
rgb_slider[i] = make_slider([=](int y, unsigned char *rgb) {
memset(rgb, 0, 3);
rgb[i] = y;
});
}
hsl_slider = make_slider([](unsigned char *slid) {
for (int y = 0; y < 256; ++y)
memset(slid + y * slider_width * 3, y, slider_width * 3);
});
hsv_slider = make_slider([](unsigned char *slid) {
for (int y = 0; y < 256; ++y) {
unsigned char rgb[3];
hsv_to_rgb(y, 255, 255, rgb, rgb + 1, rgb + 2);
for (int x = 0; x < slider_width; ++x)
memcpy(slid + y * slider_width * 3 + x * 3, rgb, 3);
}
});
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); });
// Create the controls for the dialog
wxSizer *spectrum_box = new wxStaticBoxSizer(wxVERTICAL, this, _("Color spectrum"));
@ -883,7 +881,7 @@ void DialogColorPicker::UpdateSpectrumDisplay() {
}
preview_box->SetBitmap(tempBmp);
alpha_slider_img = make_slider([=](unsigned char *slid) {
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) {