Rename lots of files to help prevent compile time name conflicts.

1 files changed, 338 insertions, 0 deletions

diff --git a/src/gwin/gwin_graph.c b/src/gwin/gwin_graph.c
new file mode 100644
index 00000000..8a450a9f
--- /dev/null
+++ b/src/gwin/gwin_graph.c
@@ -0,0 +1,338 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+/**
+ * @file    src/gwin/gwin_graph.c
+ * @brief   GWIN sub-system button code
+ */
+
+#include "gfx.h"
+
+#if GFX_USE_GWIN && GWIN_NEED_GRAPH
+
+#include "gwin_class.h"
+
+#define GGRAPH_FLG_CONNECTPOINTS			(GWIN_FIRST_CONTROL_FLAG<<0)
+#define GGRAPH_ARROW_SIZE					5
+
+static const GGraphStyle GGraphDefaultStyle = {
+	{ GGRAPH_POINT_DOT, 0, White },			// point
+	{ GGRAPH_LINE_DOT, 2, Gray },			// line
+	{ GGRAPH_LINE_SOLID, 0, White },		// x axis
+	{ GGRAPH_LINE_SOLID, 0, White },		// y axis
+	{ GGRAPH_LINE_NONE, 0, White, 0 },		// x grid
+	{ GGRAPH_LINE_NONE, 0, White, 0 },		// y grid
+	GWIN_GRAPH_STYLE_XAXIS_ARROWS|GWIN_GRAPH_STYLE_YAXIS_ARROWS		// flags
+};
+
+static const gwinVMT graphVMT = {
+		"Graph",				// The classname
+		sizeof(GGraphObject),	// The object size
+		0,						// The destroy routine
+		0,						// The redraw routine
+		0,						// The after-clear routine
+};
+
+static void pointto(GGraphObject *gg, coord_t x, coord_t y, const GGraphPointStyle *style) {
+	if (style->type == GGRAPH_POINT_NONE)
+		return;
+
+	// Convert to device space. Note the y-axis is inverted.
+	x += gg->g.x + gg->xorigin;
+	y = gg->g.y + gg->g.height - 1 - gg->yorigin - y;
+
+	if (style->size <= 1) {
+		gdispGDrawPixel(gg->g.display, x, y, style->color);
+		return;
+	}
+
+	switch(style->type) {
+	case GGRAPH_POINT_SQUARE:
+		gdispGDrawBox(gg->g.display, x-style->size, y-style->size, 2*style->size, 2*style->size, style->color);
+		break;
+#if GDISP_NEED_CIRCLE
+	case GGRAPH_POINT_CIRCLE:
+		gdispGDrawCircle(gg->g.display, x, y, style->size, style->color);
+		break;
+#endif
+	case GGRAPH_POINT_DOT:
+	default:
+		gdispGDrawPixel(gg->g.display, x, y, style->color);
+		break;
+	}
+}
+
+static void lineto(GGraphObject *gg, coord_t x0, coord_t y0, coord_t x1, coord_t y1, const GGraphLineStyle *style) {
+	coord_t	dy, dx;
+	coord_t addx, addy;
+	coord_t P, diff, i;
+	coord_t	run_on, run_off, run;
+
+	if (style->type == GGRAPH_LINE_NONE)
+		return;
+
+	// Convert to device space. Note the y-axis is inverted.
+	x0 += gg->g.x + gg->xorigin;
+	y0 = gg->g.y + gg->g.height - 1 - gg->yorigin - y0;
+	x1 += gg->g.x + gg->xorigin;
+	y1 = gg->g.y + gg->g.height - 1 - gg->yorigin - y1;
+
+	if (style->size <= 0) {
+		// Use the driver to draw a solid line
+		gdispGDrawLine(gg->g.display, x0, y0, x1, y1, style->color);
+		return;
+	}
+
+	switch (style->type) {
+	case GGRAPH_LINE_DOT:
+		run_on = 1;
+		run_off = -style->size;
+		break;
+
+	case GGRAPH_LINE_DASH:
+		run_on = style->size;
+		run_off = -style->size;
+		break;
+
+	case GGRAPH_LINE_SOLID:
+	default:
+		// Use the driver to draw a solid line
+		gdispGDrawLine(gg->g.display, x0, y0, x1, y1, style->color);
+		return;
+	}
+
+	// Use Bresenham's algorithm modified to draw a stylized line
+	run = 0;
+	if (x1 >= x0) {
+		dx = x1 - x0;
+		addx = 1;
+	} else {
+		dx = x0 - x1;
+		addx = -1;
+	}
+	if (y1 >= y0) {
+		dy = y1 - y0;
+		addy = 1;
+	} else {
+		dy = y0 - y1;
+		addy = -1;
+	}
+
+	if (dx >= dy) {
+		dy *= 2;
+		P = dy - dx;
+		diff = P - dx;
+
+		for(i=0; i<=dx; ++i) {
+			if (run++ >= 0) {
+				if (run >= run_on)
+					run = run_off;
+				gdispGDrawPixel(gg->g.display, x0, y0, style->color);
+			}
+			if (P < 0) {
+				P  += dy;
+				x0 += addx;
+			} else {
+				P  += diff;
+				x0 += addx;
+				y0 += addy;
+			}
+		}
+	} else {
+		dx *= 2;
+		P = dx - dy;
+		diff = P - dy;
+
+		for(i=0; i<=dy; ++i) {
+			if (run++ >= 0) {
+				if (run >= run_on)
+					run = run_off;
+				gdispGDrawPixel(gg->g.display, x0, y0, style->color);
+			}
+			if (P < 0) {
+				P  += dx;
+				y0 += addy;
+			} else {
+				P  += diff;
+				x0 += addx;
+				y0 += addy;
+			}
+		}
+	}
+}
+
+GHandle gwinGGraphCreate(GDisplay *g, GGraphObject *gg, const GWindowInit *pInit) {
+	if (!(gg = (GGraphObject *)_gwindowCreate(g, &gg->g, pInit, &graphVMT, 0)))
+		return 0;
+	gg->xorigin = gg->yorigin = 0;
+	gg->lastx = gg->lasty = 0;
+	gwinGraphSetStyle((GHandle)gg, &GGraphDefaultStyle);
+	gwinSetVisible((GHandle)gg, pInit->show);
+	return (GHandle)gg;
+}
+
+void gwinGraphSetStyle(GHandle gh, const GGraphStyle *pstyle) {
+	#define gg	((GGraphObject *)gh)
+
+	if (gh->vmt != &graphVMT)
+		return;
+
+	gg->style.point = pstyle->point;
+	gg->style.line = pstyle->line;
+	gg->style.xaxis = pstyle->xaxis;
+	gg->style.yaxis = pstyle->yaxis;
+	gg->style.xgrid = pstyle->xgrid;
+	gg->style.ygrid = pstyle->ygrid;
+	gg->style.flags = pstyle->flags;
+
+	#undef gg
+}
+
+void gwinGraphSetOrigin(GHandle gh, coord_t x, coord_t y) {
+	#define gg	((GGraphObject *)gh)
+
+	if (gh->vmt != &graphVMT)
+		return;
+
+	gg->xorigin = x;
+	gg->yorigin = y;
+
+	#undef gg
+}
+
+void gwinGraphDrawAxis(GHandle gh) {
+	#define gg	((GGraphObject *)gh)
+	coord_t		i, xmin, ymin, xmax, ymax;
+
+	if (gh->vmt != &graphVMT || !_gwinDrawStart(gh))
+		return;
+
+	xmin = -gg->xorigin;
+	xmax = gh->width-gg->xorigin-1;
+	ymin = -gg->yorigin;
+	ymax = gh->height-gg->yorigin-1;
+
+	// x grid - this code assumes that the GGraphGridStyle is a superset of GGraphListStyle
+	if (gg->style.xgrid.type != GGRAPH_LINE_NONE && gg->style.xgrid.spacing >= 2) {
+		for(i = gg->style.xgrid.spacing; i <= xmax; i += gg->style.xgrid.spacing)
+			lineto(gg, i, ymin, i, ymax, (GGraphLineStyle *)&gg->style.xgrid);
+		for(i = -gg->style.xgrid.spacing; i >= xmin; i -= gg->style.xgrid.spacing)
+			lineto(gg, i, ymin, i, ymax, (GGraphLineStyle *)&gg->style.xgrid);
+	}
+
+	// y grid - this code assumes that the GGraphGridStyle is a superset of GGraphListStyle
+	if (gg->style.ygrid.type != GGRAPH_LINE_NONE && gg->style.ygrid.spacing >= 2) {
+		for(i = gg->style.ygrid.spacing; i <= ymax; i += gg->style.ygrid.spacing)
+			lineto(gg, xmin, i, xmax, i, (GGraphLineStyle *)&gg->style.ygrid);
+		for(i = -gg->style.ygrid.spacing; i >= ymin; i -= gg->style.ygrid.spacing)
+			lineto(gg, xmin, i, xmax, i, (GGraphLineStyle *)&gg->style.ygrid);
+	}
+
+	// x axis
+	lineto(gg, xmin, 0, xmax, 0, &gg->style.xaxis);
+	if ((gg->style.flags & GWIN_GRAPH_STYLE_XAXIS_NEGATIVE_ARROWS)) {
+		if (xmin > 0 || xmin < -(GGRAPH_ARROW_SIZE+1)) {
+			lineto(gg, xmin, 0, xmin+GGRAPH_ARROW_SIZE, GGRAPH_ARROW_SIZE, &gg->style.xaxis);
+			lineto(gg, xmin, 0, xmin+GGRAPH_ARROW_SIZE, -GGRAPH_ARROW_SIZE, &gg->style.xaxis);
+		}
+	}
+	if ((gg->style.flags & GWIN_GRAPH_STYLE_XAXIS_POSITIVE_ARROWS)) {
+		if (xmax < 0 || xmax > (GGRAPH_ARROW_SIZE+1)) {
+			lineto(gg, xmax, 0, xmax-GGRAPH_ARROW_SIZE, GGRAPH_ARROW_SIZE, &gg->style.xaxis);
+			lineto(gg, xmax, 0, xmax-GGRAPH_ARROW_SIZE, -GGRAPH_ARROW_SIZE, &gg->style.xaxis);
+		}
+	}
+
+	// y axis
+	lineto(gg, 0, ymin, 0, ymax, &gg->style.yaxis);
+	if ((gg->style.flags & GWIN_GRAPH_STYLE_YAXIS_NEGATIVE_ARROWS)) {
+		if (ymin > 0 || ymin < -(GGRAPH_ARROW_SIZE+1)) {
+			lineto(gg, 0, ymin, GGRAPH_ARROW_SIZE, ymin+GGRAPH_ARROW_SIZE, &gg->style.yaxis);
+			lineto(gg, 0, ymin, -GGRAPH_ARROW_SIZE, ymin+GGRAPH_ARROW_SIZE, &gg->style.yaxis);
+		}
+	}
+	if ((gg->style.flags & GWIN_GRAPH_STYLE_YAXIS_POSITIVE_ARROWS)) {
+		if (ymax < 0 || ymax > (GGRAPH_ARROW_SIZE+1)) {
+			lineto(gg, 0, ymax, GGRAPH_ARROW_SIZE, ymax-GGRAPH_ARROW_SIZE, &gg->style.yaxis);
+			lineto(gg, 0, ymax, -GGRAPH_ARROW_SIZE, ymax-GGRAPH_ARROW_SIZE, &gg->style.yaxis);
+		}
+	}
+
+	_gwinDrawEnd(gh);
+	#undef gg
+}
+
+void gwinGraphStartSet(GHandle gh) {
+	if (gh->vmt != &graphVMT)
+		return;
+
+	gh->flags &= ~GGRAPH_FLG_CONNECTPOINTS;
+}
+
+void gwinGraphDrawPoint(GHandle gh, coord_t x, coord_t y) {
+	#define gg	((GGraphObject *)gh)
+
+	if (gh->vmt != &graphVMT || !_gwinDrawStart(gh))
+		return;
+
+	if ((gh->flags & GGRAPH_FLG_CONNECTPOINTS)) {
+		// Draw the line
+		lineto(gg, gg->lastx, gg->lasty, x, y, &gg->style.line);
+
+		// Redraw the previous point because the line may have overwritten it
+		pointto(gg, gg->lastx, gg->lasty, &gg->style.point);
+
+	} else
+		gh->flags |= GGRAPH_FLG_CONNECTPOINTS;
+
+	// Save this point for next time.
+	gg->lastx = x;
+	gg->lasty = y;
+
+	// Draw this point.
+	pointto(gg, x, y, &gg->style.point);
+
+	_gwinDrawEnd(gh);
+	#undef gg
+}
+
+void gwinGraphDrawPoints(GHandle gh, const point *points, unsigned count) {
+	#define gg	((GGraphObject *)gh)
+	unsigned		i;
+	const point		*p;
+
+	if (gh->vmt != &graphVMT || !_gwinDrawStart(gh))
+		return;
+
+	// Draw the connecting lines
+	for(p = points, i = 0; i < count; p++, i++) {
+		if ((gh->flags & GGRAPH_FLG_CONNECTPOINTS)) {
+			// Draw the line
+			lineto(gg, gg->lastx, gg->lasty, p->x, p->y, &gg->style.line);
+
+			// Redraw the previous point because the line may have overwritten it
+			if (i == 0)
+				pointto(gg, gg->lastx, gg->lasty, &gg->style.point);
+
+		} else
+			gh->flags |= GGRAPH_FLG_CONNECTPOINTS;
+
+		// Save this point for next time.
+		gg->lastx = p->x;
+		gg->lasty = p->y;
+	}
+
+
+	// Draw the points.
+	for(p = points, i = 0; i < count; p++, i++)
+		pointto(gg, p->x, p->y, &gg->style.point);
+
+	_gwinDrawEnd(gh);
+	#undef gg
+}
+
+#endif /* GFX_USE_GWIN && GWIN_NEED_GRAPH */