From cb2e1564ec96ecea4ec08f332542415ca5a47a31 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Tue, 2 Nov 2021 22:01:42 +0100
Subject: framebuffer: add OutputStream support with pixelfont

---
 src/app/pervasive-aurora-mb-test/main.cc | 19 ++++++++++++-------
 src/os/object/framebuffer.cc             | 29 +++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 7 deletions(-)

(limited to 'src')

diff --git a/src/app/pervasive-aurora-mb-test/main.cc b/src/app/pervasive-aurora-mb-test/main.cc
index 50c5ec2..8880442 100644
--- a/src/app/pervasive-aurora-mb-test/main.cc
+++ b/src/app/pervasive-aurora-mb-test/main.cc
@@ -8,6 +8,7 @@
 #include "driver/stdout.h"
 #include "driver/pervasive_aurora_mb.h"
 #include "object/framebuffer.h"
+#include "lib/pixelfont/pixeloperator.h"
 
 
 __attribute__ ((section(".text"))) unsigned char lynx[12 * 96] = {
@@ -113,17 +114,11 @@ __attribute__ ((section(".text"))) unsigned char lynx[12 * 96] = {
 void loop(void)
 {
 	static unsigned int i = 0;
-	fb.drawAt(i*20, i*20, 96, 96, lynx);
-	i = (i+1) % 6;
-	kout << "powerOn" << endl;
+	fb << "i = " << i++ << "  " << endl;
 	pervasiveAuroraMb.powerOn();
-	kout << "initialize" << endl;
 	pervasiveAuroraMb.initialize();
-	kout << "sendImage" << endl;
 	pervasiveAuroraMb.sendImage((unsigned char*)fb.data);
-	kout << "sendUpdate" << endl;
 	pervasiveAuroraMb.sendUpdate();
-	kout << "poweroff" << endl;
 	pervasiveAuroraMb.powerOff();
 }
 
@@ -134,6 +129,16 @@ int main(void)
 	spi.setup();
 	pervasiveAuroraMb.setup();
 
+	fb.setFont(pixeloperator);
+	fb.clear();
+	fb.drawAt(200, 300, 96, 96, lynx);
+	fb << "Hello, World!" << endl << endl;;
+	pervasiveAuroraMb.powerOn();
+	pervasiveAuroraMb.initialize();
+	pervasiveAuroraMb.sendImage((unsigned char*)fb.data);
+	pervasiveAuroraMb.sendUpdate();
+	pervasiveAuroraMb.powerOff();
+
 	arch.idle_loop();
 
 	return 0;
diff --git a/src/os/object/framebuffer.cc b/src/os/object/framebuffer.cc
index ad128dc..7b3fe0d 100644
--- a/src/os/object/framebuffer.cc
+++ b/src/os/object/framebuffer.cc
@@ -67,4 +67,33 @@ void Framebuffer::drawAt(unsigned int x, unsigned int y, unsigned int w, unsigne
 	}
 }
 
+void Framebuffer::put(char c)
+{
+	if (font == 0) {
+		return;
+	}
+	if (c == '\n') {
+		fontX = 0;
+		fontY += 8;
+		return;
+	}
+	if ((c < 32) || (c > 126)) {
+		c = '?';
+	}
+	glyph_t glyph = font[c - 32];
+	const unsigned char glyph_w = glyph[0];
+
+	if (fontX + glyph_w + 1 >= width) {
+		put('\n');
+	}
+	if (fontY >= height) {
+		return;
+	}
+	for (unsigned char i = 0; i < glyph_w; i++) {
+		data[(height/8) * (fontX + i) + fontY/8] = glyph[i+1];
+	}
+	data[(height/8) * (fontX + glyph_w + 1) + fontY/8] = 0;
+	fontX += glyph_w + 2;
+}
+
 Framebuffer fb(framebuffer);
-- 
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