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/* GStreamer
* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include <gst/gst.h>
#include "gstdwrite-enums.h"
#include "gstdwrite-effect.h"
DEFINE_GUID (IID_IGstDWriteTextRenderer, 0xb969dc25, 0xf7d2,
0x4cf8, 0x92, 0x0f, 0x5a, 0x27, 0xd1, 0x6d, 0x03, 0x6a);
class IGstDWriteTextRenderer : public IDWriteTextRenderer
{
public:
static STDMETHODIMP CreateInstance (IDWriteFactory * factory,
IGstDWriteTextRenderer ** renderer);
/* IUnknown */
STDMETHODIMP_ (ULONG) AddRef (void);
STDMETHODIMP_ (ULONG) Release (void);
STDMETHODIMP QueryInterface (REFIID riid,
void ** object);
/* IDWritePixelSnapping */
STDMETHODIMP IsPixelSnappingDisabled (void * context,
BOOL * is_disabled);
STDMETHODIMP GetCurrentTransform (void * context,
DWRITE_MATRIX * transform);
STDMETHODIMP GetPixelsPerDip (void * context,
FLOAT * pixels_per_dip);
/* IDWriteTextRenderer */
STDMETHODIMP DrawGlyphRun (void * context,
FLOAT origin_x,
FLOAT origin_y,
DWRITE_MEASURING_MODE mode,
DWRITE_GLYPH_RUN const *glyph_run,
DWRITE_GLYPH_RUN_DESCRIPTION const *glyph_run_desc,
IUnknown * client_effect);
STDMETHODIMP DrawUnderline (void * context,
FLOAT origin_x,
FLOAT origin_y,
DWRITE_UNDERLINE const * underline,
IUnknown * client_effect);
STDMETHODIMP DrawStrikethrough (void * context,
FLOAT origin_x,
FLOAT origin_y,
DWRITE_STRIKETHROUGH const * strikethrough,
IUnknown * client_effect);
STDMETHODIMP DrawInlineObject (void * context,
FLOAT origin_x,
FLOAT origin_y,
IDWriteInlineObject * inline_object,
BOOL is_sideways,
BOOL is_right_to_left,
IUnknown * client_effect);
/* Entry point for drawing text */
STDMETHODIMP Draw (const D2D1_POINT_2F & origin,
const RECT & client_rect,
IDWriteTextLayout * layout,
ID2D1RenderTarget * target);
private:
IGstDWriteTextRenderer (void);
virtual ~IGstDWriteTextRenderer (void);
private:
IDWriteFactory *factory_;
ULONG ref_count_ = 1;
};
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