[freetype2-demos] gsoc-2024-ahmet 369d6be7: makefile and inital obj-c

[Werner Lemberg]

branch: gsoc-2024-ahmet
commit 369d6be79ee9adb1706b248bfae3bedcb3c6a0df
Author: Ahmet Goksu <ahmet@goksu.in>
Commit: Ahmet Goksu <ahmet@goksu.in>

    makefile and inital obj-c
---
 graph/cocoa/grcocoa.h  |   9 +++++
 graph/cocoa/grcocoa.mm | 100 +++++++++++++++++++++++++++++++++++++++++++++++++
 graph/cocoa/rules.mk   |  22 +++++++++++
 graph/grinit.c         |   4 ++
 graph/rules.mk         |   1 -
 5 files changed, 135 insertions(+), 1 deletion(-)

diff --git a/graph/cocoa/grcocoa.h b/graph/cocoa/grcocoa.h
new file mode 100644
index 00000000..cb5d6287
--- /dev/null
+++ b/graph/cocoa/grcocoa.h
@@ -0,0 +1,9 @@
+#ifndef GRCOCOA_H_
+#define GRCOCOA_H_
+
+#include "grobjs.h"
+#include "grdevice.h"
+
+extern grDevice gr_cocoa_device;
+
+#endif /* GRCOCOA_H_ */
diff --git a/graph/cocoa/grcocoa.mm b/graph/cocoa/grcocoa.mm
new file mode 100644
index 00000000..02c30377
--- /dev/null
+++ b/graph/cocoa/grcocoa.mm
@@ -0,0 +1,100 @@
+#include "grcocoa.h"
+#include "graph.h"
+#include <Cocoa/Cocoa.h>
+#include <objc/runtime.h>
+
+typedef struct {
+    grSurface root;
+    NSWindow *window;
+    NSBitmapImageRep *bitmapRep;
+    NSImageView *imageView;
+} grCocoaSurface;
+
+static int gr_cocoa_device_init(void) {
+    // initialization for Cocoa
+    return 0;
+}
+
+static void gr_cocoa_device_done(void) {
+    // cleanup
+}
+
+static int gr_cocoa_surface_init(grSurface *surface, grBitmap *bitmap) {
+    grCocoaSurface *cocoa_surface = (grCocoaSurface *)surface;
+    int width = bitmap->width;
+    int height = bitmap->rows;
+
+    cocoa_surface->bitmapRep = [[NSBitmapImageRep alloc]
+        initWithBitmapDataPlanes:NULL
+        pixelsWide:width
+        pixelsHigh:height
+        bitsPerSample:8
+        samplesPerPixel:4
+        hasAlpha:YES
+        isPlanar:NO
+        colorSpaceName:NSDeviceRGBColorSpace
+        bitmapFormat:0
+        bytesPerRow:width * 4
+        bitsPerPixel:32];
+
+    cocoa_surface->window = [[NSWindow alloc] 
initWithContentRect:NSMakeRect(0, 0, width, height)
+        styleMask:(NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | 
NSWindowStyleMaskResizable)
+        backing:NSBackingStoreBuffered
+        defer:NO];
+    [cocoa_surface->window setTitle:@"FreeType Cocoa Demo"];
+    cocoa_surface->imageView = [[NSImageView alloc] 
initWithFrame:NSMakeRect(0, 0, width, height)];
+    [cocoa_surface->imageView setImage:[[NSImage alloc] 
initWithSize:NSMakeSize(width, height)]];
+    [[cocoa_surface->window contentView] addSubview:cocoa_surface->imageView];
+    [cocoa_surface->window makeKeyAndOrderFront:nil];
+
+    surface->bitmap = *bitmap;
+    return 1;
+}
+
+static void gr_cocoa_surface_done(grSurface *surface) {
+    grCocoaSurface *cocoa_surface = (grCocoaSurface *)surface;
+    [cocoa_surface->window close];
+    [cocoa_surface->bitmapRep release];
+}
+
+static void gr_cocoa_surface_refresh_rectangle(grSurface *surface, int x, int 
y, int w, int h) {
+    grCocoaSurface *cocoa_surface = (grCocoaSurface *)surface;
+    // update the bitmap data here
+    unsigned char* bitmap_data = [cocoa_surface->bitmapRep bitmapData];
+    for (int row = y; row < y + h; row++) {
+        for (int col = x; col < x + w; col++) {
+            int pixel_index = (row * cocoa_surface->bitmapRep.bytesPerRow) + 
(col * 4);
+            //update the pixel data
+            bitmap_data[pixel_index] = 255; // Red
+            bitmap_data[pixel_index + 1] = 255; // Green
+            bitmap_data[pixel_index + 2] = 255; // Blue
+            bitmap_data[pixel_index + 3] = 255; // Alpha
+        }
+    }
+
+    [[cocoa_surface->imageView image] 
addRepresentation:cocoa_surface->bitmapRep];
+    [cocoa_surface->imageView setNeedsDisplay:YES];
+}
+
+static int gr_cocoa_surface_listen_event(grSurface *surface, int event_mask, 
grEvent *event) {
+    // event handling here
+    // return 0 for now
+    return 0;
+}
+
+static grPixelMode gr_cocoa_pixel_modes[] = {
+    gr_pixel_mode_rgb24
+};
+
+grDevice gr_cocoa_device = {
+    sizeof(grCocoaSurface),
+    "cocoa",
+    gr_cocoa_device_init,
+    gr_cocoa_device_done,
+    gr_cocoa_surface_init,
+    gr_cocoa_surface_done,
+    gr_cocoa_surface_refresh_rectangle,
+    gr_cocoa_surface_listen_event,
+    -1,
+    NULL
+};
diff --git a/graph/cocoa/rules.mk b/graph/cocoa/rules.mk
new file mode 100644
index 00000000..1130fe97
--- /dev/null
+++ b/graph/cocoa/rules.mk
@@ -0,0 +1,22 @@
+#**************************************************************************
+#*
+#*  Cocoa specific rules file, used to compile the Cocoa graphics driver
+#*  to the graphics subsystem
+#*
+#**************************************************************************
+ifeq ($(shell uname),Darwin)
+
+  GR_COCOA  := $(GRAPH)/cocoa
+
+  GRAPH_OBJS += $(OBJ_DIR_2)/grcocoa.$O
+
+  DEVICES += COCOA
+
+  $(OBJ_DIR_2)/grcocoa.$O: $(GR_COCOA)/grcocoa.mm $(GR_COCOA)/grcocoa.h 
$(GRAPH_H)
+               $(CC) $(CFLAGS) $(GRAPH_INCLUDES:%=$I%) \
+                $I$(subst /,$(COMPILER_SEP),$(GR_COCOA)) \
+                $T$(subst /,$(COMPILER_SEP),$@ $<)
+
+endif
+
+# EOF
diff --git a/graph/grinit.c b/graph/grinit.c
index 0d665d55..0bfc5987 100644
--- a/graph/grinit.c
+++ b/graph/grinit.c
@@ -29,6 +29,10 @@
 #include "mac/grmac.h"
 #endif
 
+#ifdef DEVICE_COCOA
+#include "cocoa/grcocoa.h"
+#endif
+
 #ifdef DEVICE_ALLEGRO
 #include "allegro/gralleg.h"
 #endif
diff --git a/graph/rules.mk b/graph/rules.mk
index a11797fd..f0a02f2a 100644
--- a/graph/rules.mk
+++ b/graph/rules.mk
@@ -38,7 +38,6 @@ GRAPH_OBJS := $(OBJ_DIR_2)/gblblit.$(O)   \
               $(OBJ_DIR_2)/grswizzle.$(O)
 
 
-
 # Default value for COMPILE_GRAPH_LIB;
 # this value can be modified by the system-specific graphics drivers.
 #