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add skhello for simple hello-world sample code

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git-svn-id: http://skia.googlecode.com/svn/trunk@539 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@android.com 2010-04-12 14:27:37 +00:00
parent a956e4fe2e
commit 6413e79414
2 changed files with 80 additions and 1 deletions
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16
Makefile
View File

@ -153,6 +153,19 @@ skimage: $(SKIMAGE_OBJS) out/libskia.a
##############################################################################
SKHELLO_SRCS := skhello.cpp
SKHELLO_SRCS := $(addprefix tools/, $(SKHELLO_SRCS))
SKHELLO_OBJS := $(SKHELLO_SRCS:.cpp=.o)
SKHELLO_OBJS := $(addprefix out/, $(SKHELLO_OBJS))
skhello: $(SKHELLO_OBJS) out/libskia.a
@echo "linking shkello..."
$(HIDE)g++ $(SKHELLO_OBJS) out/libskia.a -o out/tools/skhello $(LINKER_OPTS)
##############################################################################
include gm/gm_files.mk
GM_SRCS := $(addprefix gm/, $(SOURCE))
@ -170,7 +183,7 @@ gm: $(GM_OBJS) out/libskia.a
##############################################################################
.PHONY: all
all: $ bench gm skimage tests
all: $ bench gm skimage tests skhello
.PHONY: clean
clean:
@ -183,6 +196,7 @@ help:
@echo " bench: out/bench/bench"
@echo " gm: out/gm/gm"
@echo " skimage: out/tools/skimage"
@echo " skhello: out/tools/skhello"
@echo " tests: out/tests/tests"
@echo " clean: removes entire out/ directory"
@echo " help: this text"

65
tools/skhello.cpp Normal file
View File

@ -0,0 +1,65 @@
#include "SkCanvas.h"
#include "SkGraphics.h"
//#include "SkImageDecoder.h"
#include "SkImageEncoder.h"
//#include "SkStream.h"
#include "SkString.h"
#include "SkTemplates.h"
static void show_help() {
SkDebugf("usage: skhello [-o out-dir] [-t 'hello']\n default output: skhello.png\n");
}
int main (int argc, char * const argv[]) {
SkAutoGraphics ag;
SkString path("skhello.png");
SkString text("Hello");
for (int i = 1; i < argc; i++) {
if (!strcmp(argv[i], "--help")) {
show_help();
return 0;
}
if (!strcmp(argv[i], "-o")) {
if (i == argc-1) {
SkDebugf("ERROR: -o needs a following filename\n");
return -1;
}
path.set(argv[i+1]);
i += 1; // skip the out dir name
} else if (!strcmp(argv[i], "-t")) {
if (i == argc-1) {
SkDebugf("ERROR: -t needs a following string\n");
return -1;
}
text.set(argv[i+1]);
i += 1; // skip the text string
}
}
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(30));
SkScalar width = paint.measureText(text.c_str(), text.size());
SkScalar spacing = paint.getFontSpacing();
int w = SkScalarRound(width) + 30;
int h = SkScalarRound(spacing) + 30;
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, w, h);
bitmap.allocPixels();
SkCanvas canvas(bitmap);
canvas.drawColor(SK_ColorWHITE);
paint.setTextAlign(SkPaint::kCenter_Align);
canvas.drawText(text.c_str(), text.size(),
SkIntToScalar(w)/2, SkIntToScalar(h)*2/3,
paint);
SkImageEncoder::EncodeFile(path.c_str(), bitmap,
SkImageEncoder::kPNG_Type, 100);
return 0;
}