Help:Images/ja

ここではウィキ上での画像表示のためのマークアップを説明しています. ページで使用するには通常、あなたまたは他の利用者が画像をアップロードする必要があります.

MediaWiki サーバーに格納されている画像は通常、MediaWiki リンクのターゲットとして名前空間接頭辞  を使用してレンダリングされます (以前の名前空間接頭辞   にも別名として対応しています). 別名の名前空間接頭辞  も元のメディア ファイルのコンテンツを参照するのに有用です (あらゆる MediaWiki ページとは別個で描画またはダウンロードできるようにするため).

対応している画像のメディアの種類
既定では以下のファイル形式に対応しています:
 * .jpg or .jpeg : bitmap image compressed in the standard JPEG format (this lossy format is most suitable for photographs).
 * .png : bitmap image in the Portable Network Graphics format (specified by the W3 Consortium).
 * .gif : bitmap image in the legacy Graphics Interchange Format.

ウィキメディアが使用しているその他の形式、およびその他の場所で広く有効になっている形式 (these may require extra set-up beyond what is enabled by default):
 * .svg : scalable image in the Scalable Vector Graphics format (specified by the W3 Consortium). See.
 * .tiff : Tagged image format. Often used for high-resolution archival photographs. Often used with.
 * .ogg, .oga, .ogv : Ogg multimedia (audio or video). Not an image format, but treated similarly. Often used with
 * .pdf : multipaged documents in the Portable Document Format (initially specified by Adobe). Often used in conjunction with
 * .djvu : multipaged bitmap documents in the DejaVu format (most often, scans of books). See
 * Only a single page of a .pdf or .djvu file is shown at one time.

その他のメディアの種類に対応している可能性がありますが、それらはインラインで表示できないかもしれません.

構文
画像を表示するためのマークアップは以下の通りです:

オプションはまったく指定しなくてもよいし、複数指定することもできます. オプションはパイプ記号（ ）で区切ります:
 * Format option: one of border and/or frameless, frame, thumb (or thumbnail);
 * Controls how the rendered image is formatted and embedded in the rest of the page.
 * Resizing option: one of
 * {width}px — Resizes the image to fit within the given maximum width in pixels, without restricting its height;
 * x{height}px — Resizes the image to fit within the given maximum height in pixels, without restricting its width;
 * {width}x{height}px — Resizes the image to fit within the given width and height in pixels;
 * upright — Resizes an image to fit within reasonable dimensions, according to user preferences (suitable for images whose height is larger than width).
 * Note that the image will always retain its aspect ratio, and can only be reduced (not increased) in size unless it's in a scalable media type (bitmap images cannot be scaled up).
 * The default maximum size depends on the format and the internal image dimensions (according to its media type).
 * Horizontal alignment option: one of left, right, center, none;
 * Controls the horizontal alignment (and inline/block or floating styles) of the image within a text (no default value).
 * Vertical alignment option: one of baseline, sub, super, top, text-top, middle, bottom, text-bottom;
 * Controls the vertical alignment of a non-floating inline image with the text before or after the image, and in the same block (the default vertical alignment is middle).
 * Link option: one of
 * link={target} — Allows to change the target (to an arbitrary page title, or URL) of the generated link, activable on the rendered image surface; e.g.  renders as Example.jpg (external link), or   renders as Example.jpg (internal link).
 * link= (with an empty value) —  Displays an image without any activable link; e.g.   renders as Example.jpg.


 * ! If you set  (empty), then no   will be rendered. (See 21454.)
 * Other specific options:
 * alt={alternative text} — Defines the alternative text (maps to the HTML attribute   of the generated   element) of an image that will be rendered if either the referenced image cannot be downloaded and embedded, or if the support media must use the alternative description text (e.g. when using a Braille reader or with accessibility options set by the user in its browser).
 * page={number} — Renders the specified page number (currently only applicable when showing a .djvu or .pdf file).
 * class={html class} — (MediaWiki 1.20+) Defines classes (maps to the HTML attribute  of the generated   element).
 * lang={language code} — (MediaWiki 1.22+) For SVG files containing &lt;switch&gt; statements varying on a systemLanguage attribute, selects what language to render the file in. The default is always English, even on non-English wikis.

オプションはどの順番に指定してもかまいません. 互いに矛盾するオプションがある場合、原則として後者が適用されます. ただし、表示形式の指定においては、, ,   および／または   の順に優先されます. 与えられた文字列がいずれのオプションにも一致しない場合、キャプション用のテキスト（および代替文）として見なされます. Note that MediaWiki extensions can add additional options.

If 'alt' is not specified and a caption is provided, the alternative text will be created automatically from the caption, stripped of formatting.

書式
以下は各表示形式の指定結果を示す表です.

When the height of an image in thumbnail is bigger than its width (i.e. in portrait orientation rather than landscape) and you find it too large, you may try the option, which will try to adjust its size to a more desirable size by reducing the height instead of the width. The alternative is to specify the desired maximum height (in pixels) explicitly.

Note that by writing, you can use a different image for the thumbnail.

サイズとフレーム
Among different formats, the effect of the size parameter may be different, as shown below.
 * For how it appears when its size is not specified, see Format section above.
 * When the format is not specified, or only ed, the size can be both reduced and enlarged to any specified size.
 * In the examples below, the original size of the image is 400 × 267 pixels.
 * An image with  always ignores the size specification, the original image will be reduced if it exceeds the maximum size defined in user preferences.
 * The size of an image with  can be reduced, but can not be enlarged beyond the original size of the image.

水平配置
および  を使う時には、デフォルトの配置は   になります.

垂直配置
The vertical alignment options take effect only if the image is rendered as an inline element and is not floating. They alter the way the inlined image will be vertically aligned with the text present in the same block before and/or after this image on the same rendered row.

Note that the rendered line of text where inline images are inserted (and the lines of text rendered after the current one) may be moved down (this will increase the line-height conditionally by additional line spacing, just as it may occur with spans of text with variable font sizes, or with superscripts and subscripts) to allow the image height to be fully displayed with this alignment constraint. 

To show the alignment result more clearly, the text spans are overlined and underlined, the font-size is increased to 200%, and the paragraph block is outlined with a thin border; additionally images of different sizes are aligned:

 text top: text

 text text-top: text

 text super: text

 text baseline: text

 text sub: text

 text default: text

 text middle: text

 text text-bottom: text

 text bottom: text

Notes:
 * 1) The "middle" vertical alignment position of the image (which is also the default) usually refers to the middle between the x-height and the baseline of the text (on which the vertical middle of the image will be aligned, and on which usually the text may be overstroke), but not to the middle of the line-height of the font-height that refers to the space between the "text-top" and "text-bottom" positions ; the font-height excludes:
 * 2) * the additional line separation spacing normally divided equally into two line-margins (here 0.5em, according to line-height set to 200%) above and below the font-height).
 * 3) * the additional line spacing which may be added by superscripts and subscripts.
 * 4) However, if the image height causes its top or bottom position to go above or below the normal full line-height of text, the middle position will be adjusted after the increasing the top and/or bottom line-margins so that the image can fit and align properly, and all images (including those with smaller heights) will be vertically centered on the adjusted middle position (for computing the effective line-height, the text of each rendered row with the larger font-height will be considered).
 * 5) The "text-top" and "text-bottom" alignment positions also excludes the extra line spacing added by superscripts and subscripts, but not the additional line-spacing defined by the line-height.
 * 6) The "top" and "bottom" alignment positions take into account all these extra line spacings (including superscripts and subscripts, if they are present in a rendered line span). When the image alignment constrains the image to grow above or below the normal line-spacing, and the image is not absolutely positioned, the image will cause the "top" and "bottom" positions to be adjusted (just like superscripts and subscripts), so the effective line-height between rendered lines of text will be higher.
 * 7) The "underline", "overline" and "overstrike" text-decoration positions should be somewhere within these two limits and may depend on the type and height of fonts used (the superscript and subscript styles may be taken into account in some browsers, but usually these styles are ignored and the position of these decorations may not be adjusted); so these decorations normally don't affect the vertical position of images, relatively to the text.

Stopping the text flow
On occasion it is desirable to stop text (or other inline non-floating images) from flowing around a floating image. Depending on the web browser's screen resolution and such, text flow on the right side of an image may cause a section header (for instance, == My Header == ) to appear to the right of the image, instead of below it, as a user may expect. The text flow can be stopped by placing   (or if you prefer,  ) before the text that should start below the floating image. (This may also be done without an empty line by wrapping the section with the floating images with …, which clears all floats inside the   element.)

All images rendered as blocks (including non-floating centered images, left- or right-floating images, as well as framed or thumbnailed floating images) are implicitly breaking the surrounding lines of text (terminating the current block of text before the image, and creating a new paragraph for the text after them). They will then stack vertically along their left or right alignment margin (or along the center line between these margins for centered images).

既定のリンク先の変更
The following table shows how to alter the link target (whose default is the image description page) or how to remove it. Changing the link does not alter the format described in the previous sections.

警告:
 * The licencing requirements on your wiki may not allow you to remove all links to the description page that displays the required authors attributions, the copyrights statements, the applicable licencing terms, or a more complete description of the rendered image (including its history of modifications).
 * If you change or remove the target link of an image, you will then have to provide somewhere else on your page an explicit link to this description page, or to display the copyright and author statement and a link to the applicable licence, if they are different from the elements applicable to the embedding page itself.
 * Your wiki policy may restrict the use of the alternate link parameter, or may even enforce a prohibition of alternate link parameters for embedded media files (in which case, the link parameter will be ignored), or may only accept them after validation by authorized users or administrators.

ギャラリーの構文
タグを使って、簡単にサムネイルのギャラリを作成できます. マークアップは次の通りです.

パラメーター
ギャラリータグにはいくつかのパラメーターが指定可能です.

リンクの挙動
By default an image links to its file description page. The "link=" option modifies this behavior to link to another page or website, or to turn off the image's linking behavior. Alternatively, you can create a text link to an image's description page or to the image itself.

ファイルの説明ページへのリンク
コロン を   の前に追加すると、画像をページ内に埋め込む代わりに、ファイルの説明ページへリンクします.



は次のようになります.



ファイルへの直接リンク
ファイルの説明ページを通らずにファイルに直接リンクするには疑似名前空間の “   ” を使用できます.



は次のようになります.



外部サイトのファイル
外部リンクと同じ構文を利用して外部サイトにあるファイルにリンクすることが出来ます.  リンクラベルを変えるなら リンクラベル あるいはあなたのウィキで設定が有効になっていれば（ 参照）、外部サイトのファイルを直接埋め込むこともできます. その場合は、ただURLを埋め込むだけです. http://url.for/some/image.png