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Started making the color dialog editable. I'm going to have to store HSV and alpha instead of RGB and alpha...

This commit is contained in:
Pietro Gagliardi 2016-05-17 13:44:14 -04:00
parent 7c34acc2b7
commit d892a8f710
1 changed files with 151 additions and 8 deletions
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159
windows/colordialog.cpp
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@ -6,6 +6,7 @@ struct colorDialog {
HWND svChooser;
HWND hSlider;
HWND preview;
HWND opacitySlider;
HWND editH;
HWND editS;
@ -21,6 +22,8 @@ struct colorDialog {
double b;
double a;
struct colorDialogRGBA *out;
BOOL updating;
};
// both of these are from the wikipedia page on HSV
@ -77,16 +80,18 @@ static void rgb2HSV(double r, double g, double b, double *h, double *s, double *
static void hsv2RGB(double h, double s, double v, double *r, double *g, double *b)
{
double c;
int hPrime;
double hPrime;
int h60;
double x;
double m;
double c1, c2;
c = v * s;
hPrime = (int) (h * 6); // equivalent to splitting into 60° chunks
x = c * (1 - abs(hPrime % 2 - 1));
hPrime = h * 6;
h60 = (int) hPrime; // equivalent to splitting into 60° chunks
x = c * (1.0 - fabs(fmod(hPrime, 2) - 1.0));
m = v - c;
switch (hPrime) {
switch (h60) {
case 0:
*r = c + m;
*g = x + m;
@ -121,6 +126,75 @@ static void hsv2RGB(double h, double s, double v, double *r, double *g, double *
// TODO
}
static void updateDouble(HWND hwnd, double d, HWND whichChanged)
{
WCHAR *str;
if (whichChanged == hwnd)
return;
str = ftoutf16(d);
setWindowText(hwnd, str);
uiFree(str);
}
static void updateDialog(struct colorDialog *c, HWND whichChanged)
{
double h, s, v;
uint8_t rb, gb, bb, ab;
WCHAR *str;
c->updating = TRUE;
rgb2HSV(c->r, c->g, c->b, &h, &s, &v);
updateDouble(c->editH, h, whichChanged);
updateDouble(c->editS, s, whichChanged);
updateDouble(c->editV, v, whichChanged);
updateDouble(c->editRDouble, c->r, whichChanged);
updateDouble(c->editGDouble, c->g, whichChanged);
updateDouble(c->editBDouble, c->b, whichChanged);
updateDouble(c->editADouble, c->a, whichChanged);
rb = (uint8_t) (c->r * 255);
gb = (uint8_t) (c->g * 255);
bb = (uint8_t) (c->b * 255);
ab = (uint8_t) (c->a * 255);
if (whichChanged != c->editRInt) {
str = itoutf16(rb);
setWindowText(c->editRInt, str);
uiFree(str);
}
if (whichChanged != c->editGInt) {
str = itoutf16(gb);
setWindowText(c->editGInt, str);
uiFree(str);
}
if (whichChanged != c->editBInt) {
str = itoutf16(bb);
setWindowText(c->editBInt, str);
uiFree(str);
}
if (whichChanged != c->editAInt) {
str = itoutf16(ab);
setWindowText(c->editAInt, str);
uiFree(str);
}
if (whichChanged != c->editHex) {
// TODO hex
}
// TODO TRUE?
invalidateRect(c->svChooser, NULL, TRUE);
//TODO invalidateRect(c->hSlider, NULL, TRUE);
//TODO invalidateRect(c->preview, NULL, TRUE);
//TODO invalidateRect(c->opacitySlider, NULL, TRUE);
c->updating = FALSE;
}
// this interesting approach comes from http://blogs.msdn.com/b/wpfsdk/archive/2006/10/26/uncommon-dialogs--font-chooser-and-color-picker-dialogs.aspx
static void drawSVChooser(struct colorDialog *c, ID2D1RenderTarget *rt)
{
@ -436,9 +510,60 @@ static struct colorDialog *beginColorDialog(HWND hwnd, LPARAM lParam)
fixupControlPositions(c);
// and get the ball rolling
updateDialog(c, NULL);
return c;
}
static double editDouble(HWND hwnd)
{
WCHAR *s;
double d;
s = windowText(hwnd);
d = _wtof(s);
uiFree(s);
return d;
}
static void hChanged(struct colorDialog *c)
{
double h, s, v;
rgb2HSV(c->r, c->g, c->b, &h, &s, &v);
h = editDouble(c->editH);
if (h < 0 || h >= 1.0) // note the >=
return;
printf("%g %g %g | ", c->r, c->g, c->b);
hsv2RGB(h, s, v, &(c->r), &(c->g), &(c->b));
printf("%g %g %g\n", c->r, c->g, c->b);
updateDialog(c, c->editH);
}
static void sChanged(struct colorDialog *c)
{
double h, s, v;
rgb2HSV(c->r, c->g, c->b, &h, &s, &v);
s = editDouble(c->editS);
if (s < 0 || s > 1)
return;
hsv2RGB(h, s, v, &(c->r), &(c->g), &(c->b));
updateDialog(c, c->editS);
}
static void vChanged(struct colorDialog *c)
{
double h, s, v;
rgb2HSV(c->r, c->g, c->b, &h, &s, &v);
v = editDouble(c->editV);
if (v < 0 || v > 1)
return;
hsv2RGB(h, s, v, &(c->r), &(c->g), &(c->b));
updateDialog(c, c->editV);
}
static void endColorDialog(struct colorDialog *c, INT_PTR code)
{
if (EndDialog(c->hwnd, code) == 0)
@ -446,12 +571,13 @@ static void endColorDialog(struct colorDialog *c, INT_PTR code)
uiFree(c);
}
static BOOL tryFinishDialog(struct colorDialog *c, WPARAM wParam)
// TODO make this void on the font dialog too
static void tryFinishDialog(struct colorDialog *c, WPARAM wParam)
{
// cancelling
if (LOWORD(wParam) != IDOK) {
endColorDialog(c, 1);
return TRUE;
return;
}
// OK
@ -460,9 +586,16 @@ static BOOL tryFinishDialog(struct colorDialog *c, WPARAM wParam)
c->out->b = c->b;
c->out->a = c->a;
endColorDialog(c, 2);
return TRUE;
}
// TODO change fontdialog to use this
// note that if we make this const, we get lots of weird compiler errors
static std::map<int, void (*)(struct colorDialog *)> changed = {
{ rcH, hChanged },
{ rcS, sChanged },
{ rcV, vChanged },
};
static INT_PTR CALLBACK colorDialogDlgProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
struct colorDialog *c;
@ -485,7 +618,17 @@ static INT_PTR CALLBACK colorDialogDlgProc(HWND hwnd, UINT uMsg, WPARAM wParam,
case IDCANCEL:
if (HIWORD(wParam) != BN_CLICKED)
return FALSE;
return tryFinishDialog(c, wParam);
tryFinishDialog(c, wParam);
return TRUE;
case rcH:
case rcS:
case rcV:
if (HIWORD(wParam) != EN_CHANGE)
return FALSE;
if (c->updating) // prevent infinite recursion during an update
return FALSE;
(*(changed[LOWORD(wParam)]))(c);
return TRUE;
}
return FALSE;
}