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-rw-r--r--plugingui/painter.cc119
1 files changed, 57 insertions, 62 deletions
diff --git a/plugingui/painter.cc b/plugingui/painter.cc
index 7d55294..db67a0e 100644
--- a/plugingui/painter.cc
+++ b/plugingui/painter.cc
@@ -26,32 +26,22 @@
*/
#include "painter.h"
-#include "window.h"
-
#include <cmath>
namespace GUI
{
-Painter::Painter(Widget& widget)
- : widget(widget)
+Painter::Painter(Canvas& canvas)
+ : canvas(canvas)
+ , pixbuf(canvas.GetPixelBuffer())
{
- if(widget.window())
- {
- widget.window()->beginPaint();
- }
-
- pixbuf = &widget.pixbuf;
+ canvas.beginPaint();
colour = Colour(0.0f, 0.0f, 0.0f, 0.5f);
}
Painter::~Painter()
{
- if(widget.window())
- {
- widget.window()->endPaint();
- }
-
+ canvas.endPaint();
flush();
}
@@ -60,20 +50,20 @@ void Painter::setColour(const Colour& colour)
this->colour = colour;
}
-static void plot(PixelBufferAlpha* pixbuf, const Colour& colour,
+static void plot(PixelBufferAlpha& pixbuf, const Colour& colour,
int x, int y, double c)
{
- if((x >= (int)pixbuf->width) || (y >= (int)pixbuf->height))
+ if((x >= (int)pixbuf.width) || (y >= (int)pixbuf.height))
{
return;
}
// plot the pixel at (x, y) with brightness c (where 0 ≤ c ≤ 1)
- pixbuf->addPixel(x, y,
- (unsigned char)(colour.red() * 255.0),
- (unsigned char)(colour.green() * 255.0),
- (unsigned char)(colour.blue() * 255.0),
- (unsigned char)(colour.alpha() * 255 * c));
+ pixbuf.addPixel(x, y,
+ (unsigned char)(colour.red() * 255.0),
+ (unsigned char)(colour.green() * 255.0),
+ (unsigned char)(colour.blue() * 255.0),
+ (unsigned char)(colour.alpha() * 255 * c));
}
@@ -175,11 +165,11 @@ void Painter::drawFilledRectangle(int x1, int y1, int x2, int y2)
void Painter::clear()
{
- for(int x = 0; x < (int)pixbuf->width; ++x)
+ for(int x = 0; x < (int)pixbuf.width; ++x)
{
- for(int y = 0; y < (int)pixbuf->height; ++y)
+ for(int y = 0; y < (int)pixbuf.height; ++y)
{
- pixbuf->setPixel(x, y, 0, 0, 0, 0);
+ pixbuf.setPixel(x, y, 0, 0, 0, 0);
}
}
}
@@ -192,7 +182,7 @@ void Painter::drawText(int x0, int y0, const Font& font,
y0 -= textbuf->height; // The y0 offset (baseline) is the bottom of the text.
// If the text offset is outside the buffer; skip it.
- if((x0 > (int)pixbuf->width) || (y0 > (int)pixbuf->height))
+ if((x0 > (int)pixbuf.width) || (y0 > (int)pixbuf.height))
{
delete textbuf;
return;
@@ -200,15 +190,15 @@ void Painter::drawText(int x0, int y0, const Font& font,
// Make sure we don't try to draw outside the pixbuf.
int renderWidth = textbuf->width;
- if(renderWidth > (int)(pixbuf->width - x0))
+ if(renderWidth > (int)(pixbuf.width - x0))
{
- renderWidth = pixbuf->width - x0;
+ renderWidth = pixbuf.width - x0;
}
int renderHeight = textbuf->height;
- if(renderHeight > ((int)pixbuf->height - y0))
+ if(renderHeight > ((int)pixbuf.height - y0))
{
- renderHeight = ((int)pixbuf->height - y0);
+ renderHeight = ((int)pixbuf.height - y0);
}
if(nocolour)
@@ -219,7 +209,7 @@ void Painter::drawText(int x0, int y0, const Font& font,
{
unsigned char r, g, b, a;
textbuf->pixel(x, y, &r, &g, &b, &a);
- pixbuf->addPixel(x + x0, y + y0, r, g, b, a);
+ pixbuf.addPixel(x + x0, y + y0, r, g, b, a);
}
}
}
@@ -231,11 +221,11 @@ void Painter::drawText(int x0, int y0, const Font& font,
{
unsigned char r,g,b,a;
textbuf->pixel(x, y, &r, &g, &b, &a);
- pixbuf->addPixel(x + x0, y + y0,
- colour.red() * 255,
- colour.green() * 255,
- colour.blue() * 255,
- colour.alpha() * a);
+ pixbuf.addPixel(x + x0, y + y0,
+ colour.red() * 255,
+ colour.green() * 255,
+ colour.blue() * 255,
+ colour.alpha() * a);
}
}
}
@@ -245,11 +235,11 @@ void Painter::drawText(int x0, int y0, const Font& font,
void Painter::drawPoint(int x, int y)
{
- pixbuf->setPixel(x, y,
- (unsigned char)(colour.red() * 255.0),
- (unsigned char)(colour.green() * 255.0),
- (unsigned char)(colour.blue() * 255.0),
- (unsigned char)(colour.alpha() * 255.0));
+ pixbuf.setPixel(x, y,
+ (unsigned char)(colour.red() * 255.0),
+ (unsigned char)(colour.green() * 255.0),
+ (unsigned char)(colour.blue() * 255.0),
+ (unsigned char)(colour.alpha() * 255.0));
}
static void plot4points(Painter *p, int cx, int cy, int x, int y)
@@ -348,26 +338,31 @@ void Painter::drawFilledCircle(int cx, int cy, int radius)
void Painter::drawImage(int x0, int y0, const Drawable& image)
{
- size_t fw = image.width();
- size_t fh = image.height();
+ int fw = image.width();
+ int fh = image.height();
// Make sure we don't try to draw outside the pixbuf.
- if(fw > (pixbuf->width - x0))
+ if(fw > (int)(pixbuf.width - x0))
{
- fw = (pixbuf->width - x0);
+ fw = (int)(pixbuf.width - x0);
}
- if(fh > (pixbuf->height - y0))
+ if(fh > (int)(pixbuf.height - y0))
{
- fh = (pixbuf->height - y0);
+ fh = (int)(pixbuf.height - y0);
+ }
+
+ if((fw < 1) || (fh < 1))
+ {
+ return;
}
- for(size_t y = 0; y < fh; ++y)
+ for(std::size_t y = -1 * std::min(0, y0); y < (std::size_t)fh; ++y)
{
- for(size_t x = 0; x < fw; ++x)
+ for(std::size_t x = -1 * std::min(0, x0); x < (std::size_t)fw; ++x)
{
auto& c = image.getPixel(x, y);
- pixbuf->addPixel(x0 + x, y0 + y, c);
+ pixbuf.addPixel(x0 + x, y0 + y, c);
}
}
}
@@ -375,33 +370,33 @@ void Painter::drawImage(int x0, int y0, const Drawable& image)
void Painter::drawImageStretched(int x0, int y0, const Drawable& image,
int width, int height)
{
- if((width < 1) || (height < 1))
- {
- return;
- }
-
float fw = image.width();
float fh = image.height();
// Make sure we don't try to draw outside the pixbuf.
- if(width > (int)(pixbuf->width - x0))
+ if(width > (int)(pixbuf.width - x0))
{
- width = pixbuf->width - x0;
+ width = pixbuf.width - x0;
}
- if(height > (int)(pixbuf->height - y0))
+ if(height > (int)(pixbuf.height - y0))
{
- height = pixbuf->height - y0;
+ height = pixbuf.height - y0;
+ }
+
+ if((width < 1) || (height < 1))
+ {
+ return;
}
- for(int y = 0; y < height; ++y)
+ for(int y = -1 * std::min(0, y0); y < height; ++y)
{
- for(int x = 0; x < width; ++x)
+ for(int x = -1 * std::min(0, x0); x < width; ++x)
{
int lx = ((float)x / (float)width) * fw;
int ly = ((float)y / (float)height) * fh;
auto& c = image.getPixel(lx, ly);
- pixbuf->addPixel(x0 + x, y0 + y, c);
+ pixbuf.addPixel(x0 + x, y0 + y, c);
}
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 06:15:13 +0000