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Start working on a simple Launcher app.

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Let GButton have an optional icon (GraphicsBitmap) that gets rendered in the
middle of the button if present.

Also add GraphicsBitmap::load_from_file() which allows mmap'ed RGBA32 files.
I wrote a little program to take "raw" files from GIMP and swizzle them into
the correct byte order.
This commit is contained in:
Andreas Kling 2019-02-07 23:13:47 +01:00
parent 71b9ec1ae0
commit 887b4a7a1a
29 changed files with 293 additions and 11 deletions
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17
SharedGraphics/Color.h
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@ -29,9 +29,20 @@ public:
Color(byte r, byte g, byte b) : m_value((r << 16) | (g << 8) | b) { }
Color(RGBA32 rgba) : m_value(rgba) { }
int red() const { return (m_value >> 16) & 0xff; }
int green() const { return (m_value >> 8) & 0xff; }
int blue() const { return m_value & 0xff; }
byte red() const { return (m_value >> 16) & 0xff; }
byte green() const { return (m_value >> 8) & 0xff; }
byte blue() const { return m_value & 0xff; }
byte alpha() const { return (m_value >> 24) & 0xff; }
Color blend(Color source) const
{
RGBA32 redblue1 = ((0x100u - source.alpha()) * (m_value & 0xff00ff)) >> 8;
RGBA32 redblue2 = (source.alpha() * (source.m_value & 0xff00ff)) >> 8;
RGBA32 green1 = ((0x100u - source.alpha()) * (m_value & 0x00ff00)) >> 8;
RGBA32 green2 = (source.alpha() * (source.m_value & 0x00ff00)) >> 8;
return Color(((redblue1 | redblue2) & 0xff00ff) + ((green1 | green2) & 0x00ff00));
}
RGBA32 value() const { return m_value; }