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-rw-r--r--src/base/UImage.pas41
1 files changed, 25 insertions, 16 deletions
diff --git a/src/base/UImage.pas b/src/base/UImage.pas
index 8dc38495..60b0a3a2 100644
--- a/src/base/UImage.pas
+++ b/src/base/UImage.pas
@@ -311,13 +311,13 @@ var
hour, minute, second, msecond: word;
begin
DecodeDate(time, year, month, day);
- pngTime.year := year;
- pngTime.month := month;
- pngTime.day := day;
+ pngTime.year := png_uint_16(year);
+ pngTime.month := png_byte(month);
+ pngTime.day := png_byte(day);
DecodeTime(time, hour, minute, second, msecond);
- pngTime.hour := hour;
- pngTime.minute := minute;
- pngTime.second := second;
+ pngTime.hour := png_byte(hour);
+ pngTime.minute := png_byte(minute);
+ pngTime.second := png_byte(second);
end;
(*
@@ -896,8 +896,13 @@ procedure ColorizeImage(ImgSurface: PSDL_Surface; NewColor: cardinal);
// replaced by division of longwords, shifted by 10 bits to keep
// digits.
+ // The use of longwards leeds to some type size mismatch warnings
+ // whenever differences are formed.
+ // This should not be a problem, since the results should all be positive.
+ // replacing longword by longint would probably resolve this cosmetic fault :-)
+
function ColorToHue(const Color: longword): longword;
- // returns hue within the range [0.0-6.0] but shl 10, ie. times 1024
+ // returns hue within the range [0.0-6.0] but shl 10, ie. times 1024
var
Red, Green, Blue: longword;
Min, Max, Delta: longword;
@@ -919,7 +924,8 @@ procedure ColorizeImage(ImgSurface: PSDL_Surface; NewColor: cardinal);
if Blue > Max then Max := Blue;
// calc hue
- Delta := Max - Min;
+ Delta := Max - Min; // This gives a type size mismatch warning, because Delta is longword, ie. >= 0
+ // But the assignments above are easy enough to be sure, that Max - Min is >= 0.
if (Delta = 0) then
Result := 0
else
@@ -1023,16 +1029,19 @@ begin
end
else // all colors except black and white
begin
- Delta := Max - Min;
+ Delta := Max - Min; // This gives a type size mismatch warning, because Delta is longword, ie. >= 0
+ // But the assignments above are easy enough to be sure, that Max - Min is >= 0.
Sat := (Delta shl 10) div Max; // shl 10
- // shr 10 corrects that sat and f are shl 10
+ // shr 10 corrects that Sat and f are shl 10
// the resulting p, q and t are unshifted
p := (Max*(1024-Sat)) shr 10;
q := (Max*(1024-(Sat*f) shr 10)) shr 10;
t := (Max*(1024-(Sat*(1024-f)) shr 10)) shr 10;
+ // The above 3 lines give type size mismatch warning, but all variables are longword and the ranges should be ok.
+
case HueInteger of
0: begin Red := Max; Green := t; Blue := p; end; // (v,t,p)
1: begin Red := q; Green := Max; Blue := p; end; // (q,v,p)
@@ -1043,13 +1052,13 @@ begin
end;
{$IFDEF FPC_BIG_ENDIAN}
- PixelColors[3] := Red;
- PixelColors[2] := Green;
- PixelColors[1] := Blue
+ PixelColors[3] := byte(Red);
+ PixelColors[2] := byte(Green);
+ PixelColors[1] := byte(Blue);
{$ELSE}
- PixelColors[0] := Red;
- PixelColors[1] := Green;
- PixelColors[2] := Blue;
+ PixelColors[0] := byte(Red);
+ PixelColors[1] := byte(Green);
+ PixelColors[2] := byte(Blue);
{$ENDIF}
end;